What are the causes of patchy hair loss in males?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Patchy hair loss in males is most commonly caused by alopecia areata, an autoimmune condition in which the immune system mistakenly attacks hair follicles. This results in smooth, round bald patches on the scalp or other areas of the body. Other potential causes include fungal infections (like tinea capitis), traction alopecia, or trichotillomania. Identifying the exact cause is essential, as treatment options vary widely depending on the underlying condition.

Because patchy hair loss can stem from several different conditions—each requiring a distinct approach—it's important not to guess. Taking a free, instant, online symptom check can help you better understand what may be causing your hair loss and guide you toward the right next steps, whether that means seeing a dermatologist, adjusting daily habits, or monitoring symptoms at home.

Reviewed for medical accuracy: 07/15/2026

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Explanation

Patchy hair loss in males can be quite concerning, and one common cause is a condition known as alopecia areata. This is an autoimmune disorder, which means the body's immune system mistakenly attacks its own hair follicles, leading to hair loss. The hair loss usually happens in small, round patches on the scalp, but it can affect other areas of the body too.

Causes of Patchy Hair Loss

Alopecia Areata: This is the most common cause of patchy hair loss. It can occur at any age and affects both men and women.
Other Factors: Sometimes, patchy hair loss can be due to other reasons like fungal infections or certain medications, but these are less common.

What to Do

If you notice patchy hair loss, it's important to see a healthcare provider who can help figure out the cause and discuss possible treatments. To better understand your symptoms and get personalized guidance, try our free AI symptom checker for quick insights. While alopecia areata can be distressing, there are treatments available that can help manage the condition and promote hair regrowth.

(References)

Phillips TG, Slomiany WP, & Allison R. (2017). Hair Loss: Common Causes and Treatment. American family physician, 28925637.
Mounsey AL, & Reed SW. (2009). Diagnosing and treating hair loss. American family physician, 19678603.
Strazzulla LC, Wang EHC, Avila L, Lo Sicco K, Brinster N, Christiano AM, & Shapiro J. (2018). Alopecia areata: Disease characteristics, clinical .... Journal of the American Academy of Dermatology, 29241771.

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