A case of keratosis lichenoid chronica. 
Keratosis lichenoid chronica is a rare dermatologic anomaly believed to be a variant of lichen planus.  It presents as violaceous, nodular lesions usually on the dorsal aspects of the extremities and the trunk.  The disease is refractory to treatment although psoralen ultraviolet A therapy and oral retinoids have been proven useful in some cases.  Here we present the case of a 58-year-old male diagnosed with keratosis lichenoid chronica.