👉 Centosema, also known as a pustule or an itchy rash, is a type of skin condition that typically occurs on the scalp and may be accompanied by itching, redness, swelling, and sometimes pus. It can occur in any part of the body but is most commonly found on the scalp, especially during dry weather or when exposed to strong chemicals like hair dyes or cleaning products. The term "centosema" comes from the Latin word meaning "to touch" or