Term: pachyderma or pachydermatosis or pachydermia
Literally meaning: “thick skin”
Origin: Anc Greek
+δέρμα/derma(=skin) > δεσμά/desma(=bonds) because skin keeps the body tight > δέρω/dero(=to peel, to flay).
Pachydermia is the abnormal thickening of the skin in some medical conditions as in nevoid elephantiasis or in X-linked disorder pachydermoperiostosis