keratosis of the palms and soles has also been occasionally observed, which, in rare instances, has developed into epithelioma.
keratosis palmaris et plantaris (symmetric keratodermia), as regards the local condition, is a somewhat similar affection.
keratosis ker·a·to·sis (kěr'ə-tō'sĭs)
n. pl. ker·a·to·ses (-sēz)
Excessive growth of horny tissue of the skin.