scabies

the word scabies entered english directly from latin in the late 14th century, retaining its medical meaning of "the itch." the latin noun 'scabiēs' is derived from the verb 'scabere', meaning "to scratch, scrape," which itself originates from the proto-indo-european root skabʰ-, meaning "to scratch, scrape." this etymological path is straightforward: the action of scratching defines the sensation of the disease, which then gives its name to the condition itself. the word has remained remarkably stable in form and specific meaning from latin through to modern medical english.

the entire word 'scabies' is treated as a simplex unit. it is a direct borrowing from latin, where 'scabiēs' meant "roughness, itch, mange." it is related to the latin verb 'scabere', meaning "to scratch."