Patchy hair loss or thinning could be a sign of alopecia, but only a doctor can confirm it. Alopecia comes in different forms, like alopecia areata (patchy loss) or androgenetic alopecia (gradual thinning). A dermatologist can examine your scalp, review your medical history, and may suggest tests, like a scalp biopsy or blood work, to pinpoint the cause. Early diagnosis is key, so don’t hesitate to get it checked!