07 January 2019 : Case report
Unusual clinical course, Challenging differential diagnosis, Unusual or unexpected effect of treatment, Unexpected drug reactionTeresa Sosenko1ABCDEF, Shirisha Pasula1BE, Ranga Brahmamdam1ADE, Diana Girnita1AEF
Am J Case Rep 2019; 20:26-30
BACKGROUND: Drug induced lupus erythematosus is considered an autoimmune entity which is precipitated by medications. Hydrochlorothiazide has been recognized to cause subacute cutaneous lupus erythematosus, but very few cases of systemic drug induced lupus systemic erythematosus have been reported.
CASE REPORT: A 57-year-old Caucasian male with a past medical history of hypertension and hyperlipidemia presented with recurrent fevers, chest pain, and dyspnea. Initial evaluation revealed diffuse ST elevations, small pericardial effusion, anemia, and leukopenia. He was initially treated with nonsteroidal anti-inflammatory drugs and prednisone for pericarditis. Six months later, he reported fatigue, arthralgias, morning stiffness, weight loss, fevers, and night sweats. Laboratory tests revealed persistent anemia and leukopenia. Extensive workup, including bone marrow biopsy and infectious evaluations, was negative. Autoimmune workup, however, revealed positive antihistone and antichromatin antibodies despite negative antinuclear antibody. A diagnosis of drug induced lupus secondary to hydrochlorothiazide was made. The medication was stopped, and prednisone was initiated resulting in marked improvement in his symptoms and hematologic abnormalities.
CONCLUSIONS: This report is one of the few known cases of systemic lupus erythematosus most likely induced by hydrochlorothiazide. Based on our finding, hydrochlorothiazide should be considered a possible offending agent when a patient presents with symptoms suspicious of drug induced lupus.
Keywords: Abnormalities, Drug-Induced, Hydrochlorothiazide, Lupus Erythematosus, Systemic, Chest Pain, Diuretics, Dyspnea, Middle Aged
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