Incorrect
B) Keratoderma blennorrhagicum
Keratoderma blennorrhagicum (KB) is a component of the reactive arthritis syndrome, and occurs in 10% of patients with this syndrome. Lesions appear as hyperkeratotic yellowish plaques with pustules. The clinical appearance closely resembles palmoplantar psoriasis, with the only distinction being that lesions of KB are generally thicker and more hyperkeratotic than those of palmoplantar psoriasis. The absence of urethritis, uveitis, arthritis, or any other systemic symptom argues against a diagnosis of KB in this patient.
Dr. Femia is a fellow in the dermatology–rheumatology fellowship at Brigham and Women’s Hospital in Boston. She is a diplomat of the American Board of Dermatology.
Dr. Merola is an instructor in the department of dermatology at Harvard Medical School and a fellow in the rheumatology division at Brigham and Women’s Hospital, both in Boston. He is the assistant program director for the combined medicine–dermatology training program and a diplomat of the American Board of Dermatology and the American Board of Internal Medicine.
