Literally meaning: honeycomb, wax
Origin: Anc Greek
κηρίον/kerion(=diminutive form of word κηρός/keros=honeycomb, wax) because of disease presentasion as raised, spongy lesions with hair loss.
The term was coined by Aulus Cornelius Celsus (ca 25 BC—ca 50) a Roman encyclopedist. Celsus although apparently not a physician himself is considered one of the most important contributors to medicine because he gathered extensive writings from the Greek Empire, and compiled their vast knowledge intoan encyclopedia entitled De artibus (A.D. 25-35).
Fungal infection of the hair follicles accompanied by secondary bacterial infection generally in association with Tinea capitis which is characterised by exudative tumefaction covered with pustules.