Hyperkeratosis Hyperkeratosis lenticularis perstans HP:0007570 Flegel disease SNOMEDCT_US:28488007 Hyperkeratosis lenticularis perstans (HLP), also known as Flegel disease, is a keratinization abnormality characterized by small, asymptomatic erythematous papules that leave characteristic punctate bleeding when they become detached. The lesions generally occur symmetrically along the top of the foot and on the legs, appearing more rarely on the arms, forearms, palms, and soles, and even on the oral mucosa. UMLS:C0263420