Keratoderma, Palmoplantar

**Definition:** Group of mostly hereditary disorders characterized by thickening of the palms and soles as a result of excessive keratin formation leading to hypertrophy of the stratum corneum (hyperkeratosis).

**Tree numbers:** - C16.320.850.475 - C17.800.428.435 - C17.800.827.475

**Synonyms:** - Hyperkeratosis Palmaris et Plantaris - Keratosis Palmaris et Plantaris - Keratosis, Palmoplantar - Palmoplantar Keratoderma