My 21-year-old male friend has been developing a bald patch on his scalp. This has happened around 3–4 times previously. He has visited a clinic several times and was given injections on the affected area, after which the hair grew back, but the patch has appeared again today. The current patch is round/oval, clearly visible, and the skin looks relatively smooth without obvious scaling. He is very concerned and frustrated because it keeps recurring. Please advise whether this could be alopecia areata or another condition, what may be causing the recurrence, and what treatment or tests may be needed. We can provide photos of the current patch and previous prescriptions/injection details.