scabies; mange
Medical term for a contagious skin infestation caused by mites, affecting humans (scabies) or animals (mange).
Scabies is a skin disease caused by mites.
The dog got mange and lost its fur.
itch mite; Sarcoptes scabiei
The kanji 疥 (scabies) and 癬 (ringworm) combine to describe a mite-caused skin condition. The reading かいせん is the on'yomi of these characters.