A 65-year-old woman was seen in our hypertension clinic following recovery from hydralazine-induced lupus erythematosis. She had been taking antihypertensive medication for 15 years and was evaluated by the rheumatology department a year prior to her hypertension consultation for joint pain and swelling associated with positive serologies.A month prior to her rheumatology appointment she developed acute pain and swelling in the left fifth proximal interphalangeal joint (PIP), followed by painful swelling of the fourth and fifth PIP joints allowing minimal flexion. Subsequent joint involvement progressed to the right fifth PIP joint, bilateral wrists, right shoulder, bilateral knees, bilateral ankles, and both forefeet. Laboratory tests were significant for a diffuse pattern antinuclear antibody 1:2560 and a low positive rheumatoid factor of 17 IU ⁄ mL (normal <11 IU ⁄ mL). A complete blood cell count and renal function were normal. She denied fever, rash, pleuritic chest pain, or shortness of breath.Rheumatology examination noted swelling and tenderness of the left third, fourth, and fifth PIP joints with dactylitis, swelling and tenderness of the right fifth PIP, and bilateral tender wrists. Additional serologies revealed antidouble stranded deoxyribonucleic acid antibody (anti-ds DNA ab) 15 IU ⁄ mL (normal <25.0 IU ⁄ mL), antihistone antibody 1.8 UOM ⁄ U (normal <1.0 UOM ⁄ U), C3 complement 153 mg ⁄ dL (normal 90-180 mg ⁄ dL), C4 complement 21 mg ⁄ dL (normal 10-40 mg ⁄ dL), and Westergren erythrocyte sedimentation rate 43 mm ⁄ h (normal 0-33 mm ⁄ h). Her 4-drug antihypertensive drug regimen included hydralazine 50 mg twice a day for 5 years.Hydralazine was discontinued and azulfidine was initiated and advanced to 1000 mg twice a day with meloxicam 15 mg daily. Painful joints rapidly abated and 6 months later azulfidine was discontinued without a recurrence of her inflammatory arthritis. Losartan, amlodipine, and atenolol were continued. When chlorthalidone was substituted for furosemide, elevated blood pressures off of hydralazine became controlled.