What is "pachyderma"

pachyderma \pachyderma\ (p[a^]k"[i^]*d[~e]r"m[.a]), n. (Med.) An abnormal thickening of the skin (usually unilateral on an extremity) caused by congenital enlargement of lymph vessel and lymph vessel obstruction.

Syn: pachydermatosis, pachydermia, nevoid elephantiasis.

n. (context medicine English) Abnormal thickening of the skin.

n. thickening of the skin (usually unilateral on an extremity) caused by congenital enlargement of lymph vessel and lymph vessel obstruction [syn: nevoid elephantiasis]

Pachyderma is the thickening of skin like that of a pachyderm. It occurs in the condition Pachydermoperiostosis; an X-linked genetic disorder.