acropachy

noun

acro·​pa·​chy ˈak-rō-ˌpak-ē  ə-ˈkräp-ə-kē 

plural acropachies

: an uncommon condition associated with autoimmune dysfunction of the thyroid gland (as in Graves' disease) that is marked especially by swelling and clubbing of fingers and toes and periostitis of the hands and feet