nevoid elephantiasis(n = noun.state) pachyderma - thickening of the skin (usually unilateral on an extremity) caused by congenital enlargement of lymph vessel and lymph vessel obstruction;
is a kind of congenital disease, genetic abnormality, genetic defect, genetic disease, genetic disorder, hereditary condition, hereditary disease, inherited disease, inherited disorder, elephantiasis

elephantiasis, elephantiasis neuromatosa, elephantiasis scroti