What could cause the loss of hair on legs?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Hair loss on the legs is often caused by friction from tight clothing or socks, but it can also signal reduced circulation in the lower limbs. Common contributors include peripheral artery disease (PAD), hormonal changes, thyroid disorders, and certain autoimmune conditions. Identifying the underlying cause is key to knowing whether it's harmless or requires medical attention.

Because leg hair loss can point to anything from a minor irritation to a circulation issue that needs treatment, it's worth investigating your specific symptoms rather than guessing. A free, instant, online symptom check can help you narrow down likely causes based on your unique health profile and guide you toward the right next steps—whether that's a simple lifestyle change or a conversation with your doctor.

Reviewed for medical accuracy: 07/15/2026

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Explanation

Hair loss on the legs can be caused by a few different reasons. One common cause is frictional hair loss, which occurs when clothes or socks rub against the skin. This rubbing can make the hair fall out over time. Another reason for hair loss on the legs is problems with blood circulation.

Causes of Hair Loss on Legs:

Frictional Hair Loss:

This happens when socks or pants rub against the skin on your legs. Over time, this can make the hair fall out.
Studies have shown that this type of hair loss can be seen in people who wear tight socks or pants regularly.

Blood Vessel Issues:

Hair loss on the legs can also be a sign of problems with blood flow. When blood doesn't flow well to the legs, it can affect hair growth.

It's important to understand that these are just a few reasons why someone may lose hair on their legs. If you notice hair loss and are concerned, you can use Ubie's free AI symptom checker to help identify possible causes and determine whether you should talk to a healthcare provider.

(References)

St Hilaire C. (2022). Medial Arterial Calcification: A Significant and Independent .... Arteriosclerosis, thrombosis, and vascular biology, 35081727.
Sharquie KE, Al-Rawi JR, & Al-Janabi HA. (2002). Frictional hair loss in Iraqi patients. The Journal of dermatology, 12184639.
Jakhar D, & Kaur I. (2018). Frictional (Sock) Alopecia of the Legs: Trichoscopy as an Aid. International journal of trichology, 30034193.

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