Dermatomyositis Presenting as Life-threatening Hypercalcemia

Dermatomyositis is a rare disease characterized by classic skin lesions and muscle weakness. In rare cases, life-threatening hypercalcemia may develop caused by regression of dystrophic calcifications. Here we report a 36-year-old man who presented with progressive proximal weakness, difficulty in ambulation, and weight loss. He had the V-sign, Gottron’s papules, and hard, chalky nodules on both antecubital, thigh, and hip areas. Laboratory examinations revealed hypercalcemia (3.47 mmol/L) and shortened QT interval. Workup for malignancy and tuberculosis yielded negative results. Biopsy of the antecubital areas revealed calcinosis cutis. Serum calcium levels gradually normalized with hydration and steroids. Our case illustrated that a high index of suspicion for dermatomyositis is warranted for early diagnosis and ascertaining the etiology of hypercalcemia is vital in the management of this life-threatening complication. While hypercalcemia from dermatomyositis may respond to steroids, to date, individualization of treatment remains the standard of care.

Ostraceous and inverse psoriasis with psoriatic arthritis as the presenting features of advanced HIV infection

Knowledge of both the common and atypical presentations of human immunodeficiency virus (HIV)-associated dermatoses may be helpful in arousing suspicion of HIV, especially in patients with no reported risk factors. Herein, we report the case of an otherwise healthy, nonpromiscuous 29-year-old man who presented to our institution with an eight-week history of plaques with oyster shell-like scales on the trunk, extremities and genital area. The plaques were associated with fever, and intermittent knee pain and swelling. Initial diagnostic tests were suggestive of drug hypersensitivity syndrome, and the patient's condition improved with treatment using oral prednisone. However, the lesions recurred when the dose of prednisone was tapered, even after the culprit drug had long been discontinued. Repeat skin punch biopsy and arthrocentesis revealed a diagnosis of psoriasis vulgaris with psoriatic arthritis. Due to the atypical presentation of psoriasis, the patient was counselled to undergo HIV testing, which came back positive. Clinicians should be attuned to the skin signs heralding HIV/acquired immunodeficiency syndrome, in order to facilitate early diagnosis and treatment.