Hair loss on legs may result from multiple causes, including alopecia, friction, injuries, skin infections, or circulation problems.

When you think of hair loss, also known as alopecia, you’re likely thinking of losing strands of hair from your head and face. While this type of hair loss is often the most noticeable, you can lose hair from virtually any part of your body, including your legs.

Gradual leg hair loss is also common with aging in both men and women. However, if you notice large amounts of hair falling off your legs at once or if it happens suddenly, it may be time to see a healthcare professional.

Permanent or chronic hair loss occurs when individual hairs break away from the follicles, and the follicles don’t produce new hairs. Follicles are skin pores where hair roots live.

As you age, leg hair tends to become thinner and may start to fall out. This may be more likely if this type of hair loss runs in your family.

Alopecia areata, a type of chronic hair loss condition, is also hereditary. With alopecia areata, the immune system attacks the cells that contribute to hair growth.

The condition more commonly affects the scalp causing hair loss in patches. Body-wide hair loss is also possible and usually referred to as alopecia universalis.

Anterolateral leg alopecia refers to hair loss on your legs that’s primarily located on the front and outer sides.

Leg hair loss is sometimes related to other conditions or complications, including:

Other possible causes of hair loss on your legs may include:

The causes of leg hair loss are numerous. If leg hair loss is due to an underlying condition, it is often accompanied by hair loss on other parts of the body. Some exceptions may include leg-specific conditions, such as PAD in the legs or friction from the clothing you wear.

Only a healthcare professional may accurately diagnose leg hair loss as a symptom or condition. They’ll likely check your medical history and run blood tests to determine if the hair loss is related to nutritional deficiencies, thyroid dysfunction, or other causes.

Since most causes of leg hair loss involve hair loss on other body parts, a doctor may do a thorough physical exam to look for signs of hair loss on other parts of your body. They may also look for signs of rashes, infections, and possible symptoms of skin conditions that might contribute to hair loss in the legs.

Depending on the cause, a doctor may refer you to a dermatologist or a doctor who specializes in skin and hair disorders.

If your doctor suspects peripheral artery disease, they could also test for certain risk factors, such as:

The treatment for leg hair loss depends on the underlying cause.

Some of the possible treatments for hair loss on your legs include:

  • supplements or dietary adjustments for nutritional deficiencies
  • corticosteroid injections or topical medications to stop inflammation
  • hormone replacement treatments, such as levothyroxine (Synthroid) for hypothyroidism

It’s important to determine the cause of the hair loss before you try a home remedy or over-the-counter medication.

While leg hair loss might result from chronic conditions, some of the underlying causes may require prompt medical attention.

Seek medical attention if leg hair loss is accompanied by the following symptoms:

  • painful or widespread rashes
  • pain
  • numbness
  • severe inflammation
  • open wounds
  • infections
  • skin that’s cool and pale to the touch
  • muscle loss

Hair loss is a complex condition. Minor cases of hair loss on your legs could be temporary due to stress, life changes, or other acute conditions. However, if leg hair loss is widespread, sudden, or painful, it is a good idea to seek medical care.