Characterized by uniform, confluent thickening of the entire palmoplantar surface.
A type of keratoderma distinguished by the presence of prominent background erythema (redness) in addition to the hyperkeratosis.
Presents as localized, callus-like masses of hyperkeratosis at sites of recurrent pressure or friction.
Characterized by multiple, small, discrete, 'raindrop' or 'seed-like' hyperkeratotic papules scattered across the palms and soles.
Presents with distinctive linear bands of hyperkeratosis extending from the palm onto the fingers.
