Lichenoid drug eruption due to isoniazid presenting as generalized exfoliative dermatitis in an immunocompromised patient

Lichenoid drug eruption is characterized by multiple discrete violaceous shiny papules often becoming confluent. It is a common benign adverse drug reaction and has been extensively described in the literature with various drugs. Here, we report an unusual presentation of lichenoid drug eruption in the form of generalized exfoliative dermatitis with hair loss in a patient of human immunodeficiency virus infection due to isoniazid.