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Matthew J Verheyden Department of Diabetes, Metabolism and Endocrinology, Royal North Shore Hospital, St Leonards, New South Wales, Australia
Cancer Diagnosis and Pathology Group, Kolling Institute, Sydney, New South Wales, Australia
Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia

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Natassia Rodrigo Department of Diabetes, Metabolism and Endocrinology, Royal North Shore Hospital, St Leonards, New South Wales, Australia
Cancer Diagnosis and Pathology Group, Kolling Institute, Sydney, New South Wales, Australia
Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
Department of Diabetes and Endocrinology, Nepean Hospital, Kingswood, New South Wales, Australia

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Anthony J Gill Cancer Diagnosis and Pathology Group, Kolling Institute, Sydney, New South Wales, Australia
Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
NSW Health Pathology, Department of Anatomical Pathology, Royal North Shore Hospital, St Leonards, New South Wales, Australia

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Sarah J Glastras Department of Diabetes, Metabolism and Endocrinology, Royal North Shore Hospital, St Leonards, New South Wales, Australia
Cancer Diagnosis and Pathology Group, Kolling Institute, Sydney, New South Wales, Australia
Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia

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Summary

Necrobiosis lipoidica (NL) is a rare and chronic disease characterised by yellow-brown, atrophic, telangiectatic plaques usually located on the lower extremities, with pathological features of collagen necrobiosis and dermal inflammation. Most cases are seen in those with diabetes mellitus, particularly type 1 diabetes (T1DM), and many without diabetes have evidence of abnormal glucose tolerance or family history of autoimmune disease. In this study, we describe four patients with NL and T1DM. A common theme is late identification and delay in diagnosis. Hence, we discuss the clinical features, need for clinicopathological correlation, and the management and prognostic implications for this distinctive entity. While most remain relatively asymptomatic, others progress to debilitating disease with pruritus, dysesthesia, and pain. Pain is often intense in the presence of ulcerated plaques, a morbid complication of NL. Diagnosis requires the integration of both clinical and histopathological findings. NL has proven a challenging condition to treat, and despite the numerous therapeutic modalities available, there is no standard of care. Hence, in this study, we provide an overview of current management strategies available for NL.

Learning points

  • Necrobiosis lipoidica (NL) is classically seen in patients with type 1 diabetes.

  • Koebner phenomenon, defined as the appearance of new skin lesions on previously unaffected skin secondary to trauma, is a well-recognised feature in NL.

  • Background skin phototype contributes to variable yellow appearance of lesions in NL.

  • Diagnosis of NL requires careful clinicopathological correlation.

  • NL is a chronic disease often refractory to treatment leading to significant morbidity for the patient and a management conundrum for the multidisciplinary healthcare team.

  • No standard therapeutic regimen has been established for the management of NL.

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Jenny S W Yun Department of Surgical Oncology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia

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Chris McCormack Department of Surgical Oncology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia

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Michelle Goh Department of Surgical Oncology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia

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Cherie Chiang Department of Internal Medicine, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
University of Melbourne, Parkville, Victoria, Australia

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Summary

Acanthosis nigricans (AN) is a common dermatosis associated with hyperinsulinemia and insulin resistance. However, AN has been rarely reported in patients with insulinoma, a state of persistent hyperinsulinemia. We present a case of metastatic insulinoma, in whom AN manifested after the first cycle of peptide receptor radionuclide therapy (PRRT). A 40-year-old man was diagnosed with metastatic insulinoma after 5 months of symptomatic hypoglycemia. Within 1 month post PRRT, the patient became euglycemic but developed a pigmented, pruritic rash which was confirmed on biopsy as AN. We discuss the rare manifestation of AN in subjects with insulinoma, the role of insulin in the pathogenesis of AN, malignant AN in non-insulin-secreting malignancies and association with other insulin-resistant endocrinopathies such as acromegaly.

Learning points

  • Acanthosis nigricans (AN) is a common dermatosis which is typically asymptomatic and associated with the hyperinsulinemic state.

  • Malignant AN can rapidly spread, cause pruritus and affect mucosa and the oral cavity.

  • AN is extremely rare in patients with insulinoma despite marked hyperinsulinemia.

  • Peptide receptor radionuclide therapy might have triggered TGF-α secretion in this subject which led to malignant AN.

  • Rapid spread or unusual distribution of pruritic AN warrants further investigation to exclude underlying malignancy.

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Najoua Rbiai Department of Diabetology and Endocrinology, Mohammed VI Hospital

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Ikram Mahroug Department of Diabetology and Endocrinology, Mohammed VI Hospital

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Nada Zizi Laboratory of Epidemiology, Clinical Research and Public Health
Department of Dermatology, Mohammed VI Hospital, Faculty of Medicine and Pharmacy, Mohamed Ist University, Oujda, Morocco

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Hanane Latrech Department of Diabetology and Endocrinology, Mohammed VI Hospital
Laboratory of Epidemiology, Clinical Research and Public Health

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Summary

Cushing’s disease or pituitary adrenocorticotropic hormone (ACTH)-dependent Cushing’s syndrome is considered a rare condition. It is caused by hypersecretion of the ACTH by a pituitary adenoma that ultimately induces endogenous hypercortisolism by stimulating the adrenal glands. It is responsible for significant morbidity and mortality. The clinical signs and symptoms of hypercortisolism are usually common and non-specific including obesity, moon face, hypertension, hirsutism and facial plethora. The association between Cushing’s disease and calcinosis cutis which is defined as dystrophic calcium deposition in the skin and subcutaneous tissues is extremely rare. To the best of our knowledge, it has never been described previously in humans, probably like a symptom or complication of chronic and severe hypercortisolism. In this paper, we report a case of a 30-year-old female diagnosed with Cushing’s disease and presented bilateral leg’s calcinosis cutis complicated with ulceration. The evolution was favorable and the complete cicatrization was obtained 12 months following the suppression of systemic glucocorticoid excess.

Learning points

  • Calcinosis cutis is common in autoimmune connective diseases. However, to our knowledge, it has never been reported in humans with Cushing’s disease.

  • Given the rarity of this association, the diagnostic approach to calcinosis cutis must exclude the other etiologies.

  • Calcinosis cutis is challenging to treat with no gold standard therapy. In our case, the use of the combination of colchicine and bisphosphonates does not significantly improve the patient’s outcomes. In fact, we suppose that without treating the endogenous hypercortisolism, the calcinosis cutis will not resolve.

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Marina Yukina Endocrinology Research Centre, Moscow, Russia

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Nurana Nuralieva Endocrinology Research Centre, Moscow, Russia

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Ekaterina Sorkina Endocrinology Research Centre, Moscow, Russia

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Ekaterina Troshina Endocrinology Research Centre, Moscow, Russia

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Anatoly Tiulpakov Endocrinology Research Centre, Moscow, Russia

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Zhanna Belaya Endocrinology Research Centre, Moscow, Russia

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Galina Melnichenko Endocrinology Research Centre, Moscow, Russia

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Summary

Lamin A/C (LMNA) gene mutations cause a heterogeneous group of progeroid disorders, including Hutchinson–Gilford progeria syndrome, mandibuloacral dysplasia, atypical progeroid syndrome (APS) and generalized lipodystrophy-associated progeroid syndrome (GLPS). All of those syndromes are associated with some progeroid features, lipodystrophy and metabolic complications but vary differently depending on a particular mutation and even patients carrying the same gene variant are known to have clinical heterogeneity. We report a new 30-year-old female patient from Russia with an APS and generalized lipodystrophy (GL) due to the heterozygous de novo LMNA p.E262K mutation and compare her clinical and metabolic features to those of other described patients with APS. Despite many health issues, short stature, skeletal problems, GL and late diagnosis of APS, our patient seems to be relatively metabolically healthy for her age when compared to previously described patients with APS.

Learning points

  • Atypical progeroid syndromes (APS) are rare and heterogenic with different age of onset and degree of metabolic disorders, which makes this diagnosis very challenging for clinicians and may be missed until the adulthood.

  • The clinical picture of the APS depends on a particular mutation in the LMNA gene, but may vary even between the patients with the same mutation.

  • The APS due to a heterozygous LMNA p.E262K mutation, which we report in this patient, seems to have association with the generalized lipodystrophy, short stature and osteoporosis, but otherwise, it seems to cause relatively mild metabolic complications by the age of 30.

  • The patients with APS and lipodystrophy syndromes require a personalized and multidisciplinary approach, and so they should be referred to highly specialized reference-centres for diagnostics and treatment as early as possible.

  • Because of the high heterogeneity of such a rare disease as APS, every patient’s description is noteworthy for a better understanding of this challenging syndrome, including the analysis of genotype-phenotype correlations.

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Joana Lima Ferreira Endocrinology Department, Hospital Pedro Hispano, Matosinhos Local Health Unit, Matosinhos, Portugal

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Francisco Simões de Carvalho Endocrinology Department, Hospital Pedro Hispano, Matosinhos Local Health Unit, Matosinhos, Portugal

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Ana Paula Marques Endocrinology Department, Hospital Pedro Hispano, Matosinhos Local Health Unit, Matosinhos, Portugal

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Rosa Maria Príncipe Endocrinology Department, Hospital Pedro Hispano, Matosinhos Local Health Unit, Matosinhos, Portugal

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Summary

Autoimmune polyglandular syndrome type 1 (APS-1) is a very rare autoimmune entity, accounting for about 400 cases reported worldwide. It is characterized by the presence of at least two of three cardinal components: chronic mucocutaneous candidiasis (CMC), hypoparathyroidism and Addison’s disease. It typically manifests in childhood with CMC and years later with hypoparathyroidism. A 50-year-old man was referred to the Endocrinology outpatient clinic due to irregular follow-up of primary hypoparathyroidism diagnosed at age 7. Previous analysis reported frequent fluctuations of calcium and phosphate levels and persistent hypercalciuria. He presented several comorbidities, including bilateral cataracts, other ocular disorders, transient alopecia and chronic gastritis. Due to weight loss, fatigue, gastrointestinal complaints and the findings at objective examination, Addison’s disease and CMC were investigated and confirmed. Antifungal therapy and hormonal replacement were started with evident clinical improvement. Regarding hypoparathyroidism, calcium-phosphate product decreased and other extraskeletal calcifications were diagnosed, such as nephrolithiasis and in basal ganglia. Further evaluation by genetic analysis revealed homozygosity for a frameshift mutation considered to be a pathogenic variant. It was reported only in two Asian siblings in compound heterozygosity. This case highlights the broad phenotypic spectrum of APS-1 and the significative intra-familial phenotype variability. A complete clinical history taking and high index of suspicion allowed the diagnosis of this rare entity. This case clarifies the need for regular long-term follow-up. In the specific case of hypoparathyroidism and Addison’s disease in combination, the management of APS-1 can be complex.

Learning points:

  • Autoimmune polyglandular syndrome type 1 (APS-1) is a deeply heterogeneous genetic entity with a broad spectrum of clinical manifestations and a significant intra-family phenotypic variability.

  • Early diagnosis of APS-1 is challenging but clinically relevant, as endocrine and non-endocrine manifestations may occur during its natural history.

  • APS-1 should be considered in cases of acquired hypoparathyroidism, and even more so with manifestations with early onset, family history and consanguinity.

  • APS-1 diagnosis needs a high index of suspicion. Key information such as all the comorbidities and family aspects would never be valued in the absence of a complete clinical history taking.

  • Especially in hypoparathyroidism and Addison’s disease in combination, the management of APS-1 can be complex and is not a matter of simply approaching individually each condition.

  • Regular long-term monitoring of APS-1 is essential. Intercalary contact by phone calls benefits the control of the disease and the management of complications.

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Melissa Katz Department of Diabetes and Endocrinology, Cairns Hospital, Cairns, Queensland, Australia

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Simon Smith Infectious Diseases, Cairns Hospital, Cairns, Queensland, Australia
School of Medicine and Dentistry, James Cook University, Cairns, Queensland, Australia

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Luke Conway Department of Diabetes and Endocrinology, Cairns Hospital, Cairns, Queensland, Australia
School of Medicine and Dentistry, James Cook University, Cairns, Queensland, Australia

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Ashim Sinha Department of Diabetes and Endocrinology, Cairns Hospital, Cairns, Queensland, Australia
School of Medicine and Dentistry, James Cook University, Cairns, Queensland, Australia

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Summary

Diabetes mellitus is a well-recognised risk factor for melioidosis, the disease caused by Burkholderia pseudomallei, which is endemic in northern Australia and Southeast Asia. We present the initial diagnostic dilemma of a febrile patient from northern Australia with type 1 diabetes mellitus and negative blood cultures. After a 6-week history of fevers and undifferentiated abdominal pain, MRI of her spine revealed a psoas abscess. She underwent drainage of the abscess which cultured B. pseudomallei. She completed 6 weeks of intravenous (IV) ceftazidime and oral trimethoprim/sulphamethoxazole (TMP/SMX) followed by a 12-week course of oral TMP/SMX. We postulate that the likely route of infection was inoculation via her skin, the integrity of which was compromised from her insulin pump insertion sites and an underlying dermatological condition.

Learning points:

  • Diabetes mellitus is the strongest risk factor for developing melioidosis.

  • Atypical infections need to be considered in individuals with diabetes mellitus who are febrile, even if blood cultures are negative.

  • There is heterogeneity in the clinical presentation of melioidosis due to variable organ involvement.

  • Consider melioidosis in febrile patients who have travelled to northern Australia, Asia and other endemic areas.

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Clarissa Ern Hui Fang Bariatric Medicine Service, Centre for Diabetes, Endocrinology and Metabolism, Galway University Hospitals, Galway, Ireland

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Mohammed Faraz Rafey Bariatric Medicine Service, Centre for Diabetes, Endocrinology and Metabolism, Galway University Hospitals, Galway, Ireland
HRB Clinical Research Facility, National University of Ireland Galway, Galway, Ireland

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Aine Cunningham Bariatric Medicine Service, Centre for Diabetes, Endocrinology and Metabolism, Galway University Hospitals, Galway, Ireland

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Sean F Dinneen Bariatric Medicine Service, Centre for Diabetes, Endocrinology and Metabolism, Galway University Hospitals, Galway, Ireland
HRB Clinical Research Facility, National University of Ireland Galway, Galway, Ireland

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Francis M Finucane Bariatric Medicine Service, Centre for Diabetes, Endocrinology and Metabolism, Galway University Hospitals, Galway, Ireland
HRB Clinical Research Facility, National University of Ireland Galway, Galway, Ireland

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Summary

A 28-year-old male presented with 2 days of vomiting and abdominal pain, preceded by 2 weeks of thirst, polyuria and polydipsia. He had recently started risperidone for obsessive-compulsive disorder. He reported a high dietary sugar intake and had a strong family history of type 2 diabetes mellitus (T2DM). On admission, he was tachycardic, tachypnoeic and drowsy with a Glasgow Coma Scale (GCS) of 10/15. We noted axillary acanthosis nigricans and obesity (BMI 33.2 kg/m2). Dipstick urinalysis showed ketonuria and glycosuria. Blood results were consistent with diabetic ketoacidosis (DKA), with hyperosmolar state. We initiated our DKA protocol, with intravenous insulin, fluids and potassium, and we discontinued risperidone. His obesity, family history of T2DM, acanthosis nigricans and hyperosmolar state prompted consideration of T2DM presenting with ‘ketosis-prone diabetes’ (KPD) rather than T1DM. Antibody markers of beta-cell autoimmunity were subsequently negative. Four weeks later, he had modified his diet and lost weight, and his metabolic parameters had normalised. We reduced his total daily insulin dose from 35 to 18 units and introduced metformin. We stopped insulin completely by week 7. At 6 months, his glucometer readings and glycated haemoglobin (HbA1c) level had normalised.

Learning points:

  • Risperidone-induced diabetic ketoacidosis (DKA) is not synonymous with type 1 diabetes, even in young white patients and may be a manifestation of ‘ketosis-prone’ type 2 diabetes (KPD).

  • KPD is often only confirmed after the initial presentation, when islet autoimmunity and cautious phasing out of insulin therapy have been assessed, and emergency DKA management remains the same.

  • As in other cases of KPD, a family history of T2DM and presence of cutaneous markers of insulin resistance were important clinical features suggestive of an alternative aetiology for DKA.

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Cheuk-Lik Wong Department of Medicine and Geriatrics, Caritas Medical Centre, Shamshuipo, Kowloon, Hong Kong SAR

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Chun-Kit Fok Department of Medicine and Geriatrics, Caritas Medical Centre, Shamshuipo, Kowloon, Hong Kong SAR

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Vicki Ho-Kee Tam Department of Medicine and Geriatrics, Caritas Medical Centre, Shamshuipo, Kowloon, Hong Kong SAR

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Summary

We report a case of elderly Chinese lady with neurofibromatosis type-1 presenting with longstanding palpitation, paroxysmal hypertension and osteoporosis. Biochemical testing showed mild hypercalcaemia with non-suppressed parathyroid hormone level suggestive of primary hyperparathyroidism, and mildly elevated urinary fractionated normetanephrine and plasma-free normetanephrine pointing to a catecholamine-secreting pheochromocytoma/paraganglioma. Further scintigraphic investigation revealed evidence of a solitary parathyroid adenoma causing primary hyperparathyroidism and a left pheochromocytoma. Resection of the parathyroid adenoma and pheochromocytoma resulted in normalization of biochemical abnormalities and hypertension. The rare concurrence of primary hyperparathyroidism and pheochromocytoma in neurofibromatosis type-1 is discussed.

Learning points:

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Dimitrios Haidopoulos Department of Obstetrics and Gynecology, Alexandra Hospital, University of Athens, 80 Vas Sofias Avenue, Athens, Greece

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George Bakolas Department of Obstetrics and Gynecology, Alexandra Hospital, University of Athens, 80 Vas Sofias Avenue, Athens, Greece

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Lina Michala Department of Obstetrics and Gynecology, Alexandra Hospital, University of Athens, 80 Vas Sofias Avenue, Athens, Greece

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Summary

Turner syndrome (TS) has been linked to a number of autoimmune conditions, including lichen sclerosus (LS), at an estimated prevalence of 17%. LS is a known precursor to vulvar cancer. We present a case of vulvar cancer in a 44-year-old woman, who had previously complained of pruritus in the area, a known symptom of LS. Histology confirmed a squamous cell carcinoma with underlying LS. Vulvar assessment for the presence of LS should be undertaken regularly as part of the routine assessments proposed for adult TS women. If LS is identified, then the patient should be warned of the increased risk of vulvar cancer progression and should be monitored closely for signs of the condition.

Learning points

  • Patients with TS are at increased risk of developing LS.

  • LS is a known precursor to vulvar cancer.

  • TS women with LS may be at risk of developing vulvar cancer and should be offered annual vulvar screening and also be aware of signs and symptoms of early vulvar cancer.

Open access
Avinash Suryawanshi Department of Endocrinology and Metabolism, Concord Repatriation General Hospital, Concord, New South Wales, 2139, Australia
Concord Clinical School, The University of Sydney, Sydney, New South Wales, 2139, Australia

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Timothy Middleton Department of Endocrinology and Metabolism, Concord Repatriation General Hospital, Concord, New South Wales, 2139, Australia
Concord Clinical School, The University of Sydney, Sydney, New South Wales, 2139, Australia

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Kirtan Ganda Department of Endocrinology and Metabolism, Concord Repatriation General Hospital, Concord, New South Wales, 2139, Australia
Concord Clinical School, The University of Sydney, Sydney, New South Wales, 2139, Australia

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Summary

X-linked adrenoleukodystrophy (X-ALD) is a rare genetic condition caused by mutations in the ABCD1 gene that result in accumulation of very long chain fatty acids (VLCFAs) in various tissues. This leads to demyelination in the CNS and impaired steroidogenesis in the adrenal cortex and testes. A 57-year-old gentleman was referred for the assessment of bilateral gynaecomastia of 6 months duration. He had skin hyperpigmentation since 4 years of age and spastic paraparesis for the past 15 years. Physical examination findings included generalised hyperpigmentation (including skin, buccal mucosa and palmar creases), blood pressure of 90/60 mmHg, non-tender gynaecomastia and bilateral hypoplastic testes. Lower limb findings were those of a profoundly ataxic gait associated with significant paraparesis and sensory loss. Primary adrenal insufficiency was confirmed and investigations for gynaecomastia revealed normal testosterone with mildly elevated luteinising hormone level and normal prolactin. The combination of primary adrenal insufficiency (likely childhood onset), partial testicular failure (leading to gynaecomastia) and spastic paraparesis suggested X-ALD as a unifying diagnosis. A serum VLCFA panel was consistent with X-ALD. Subsequent genetic testing confirmed the diagnosis. Treatment with replacement doses of corticosteroid resulted in improvement in blood pressure and increased energy levels. We have reported the case of a 57-year-old man with a very late diagnosis of X-ALD manifested by childhood onset of primary adrenal insufficiency followed by paraparesis and primary hypogonadism in adulthood. Thus, X-ALD should be considered as a possibility in a patient with non-autoimmune primary adrenal insufficiency and neurological abnormalities.

Learning points

  • Adult patients with X-ALD may be misdiagnosed as having multiple sclerosis or idiopathic spastic paraparesis for many years before the correct diagnosis is identified.

  • Screening for X-ALD with a VLCFA panel should be strongly considered in male children with primary adrenal insufficiency and in male adults presenting with non-autoimmune primary adrenal insufficiency.

  • Confirmation of a genetic diagnosis of X-ALD can be very useful for a patient's family as genetic testing enables detection of pre-symptomatic female heterozygotes who can then be offered pre-natal testing to avoid transmission of the disease to male offsprings.

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