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April 1978

Papulonecrotic Tuberculid Secondary to Mycobacterium bovis

Author Affiliations

From the Department of Dermatology, Mayo Clinic and Mayo Foundation, Rochester, Minn.

Arch Dermatol. 1978;114(4):564-566. doi:10.1001/archderm.1978.01640160042012

• A patient with papulonecrotic tuberculid had a pruritic papular eruption associated with constitutional symptoms. The eruption flared whenever the patient received low doses of prednisone to control symptoms of temporal arteritis. A cervical lymph node biopsy specimen demonstrated acid-fast bacilli, and Mycobacterium bovis grew on the cultures. The eruption cleared completely with antituberculous therapy. This case demonstrated the clinicopathologic findings compatible with a diagnosis of papulonecrotic tuberculid. Skepticism regarding the existence of papulonecrotic tuberculid is probably a result of the current decreased prevalence of untreated tuberculosis, and the subsequently increased rarity of this entity.

(Arch Dermatol 114:564-566, 1978)