Slightly red small patch on head with missing har

Patient: Hello, about two weeks a go I have noticed a round slightly red patch on the front of my head. I’ve also noticed that the hair on this area is missing. I’m 20 year old female, not taking any medication. It doesn’t seem like the hair is thinning or missing anywhere else on my head. It would be great if you could help me.

Symptoms: Slightly red small patch on the front of my head, missing hair

Doctor: