Trichorrhexis nodosa


Definition

Trichorrhexis nodosa is a common hair problem in which thickened or weak points (nodes) along the hair shaft cause your hair to break off easily.

Alternative Names

Hair shaft fracture; Brittle hair; Fragile hair; Hair breakage

Causes

This EM Should be displayed at the top of the article section "Causes"

Trichorrhexis nodosa can be an inherited condition.

The condition may be triggered by things such as blow-drying, over-brushing, perming, or excessive chemical use.

In some cases, trichorrhexis nodosa is caused by an underlying disorder, including very rare ones, such as:

Symptoms

Your hair may break easily or it may appear like it is not growing.

In African Americans, looking at the scalp area using a microscope shows that the hair breaks off at the scalp area before it grows long.

In other people, the problem often appears at the end of a hair shaft in the form of split ends, thinning hair, and hair tips that look white.

Exams and Tests

The health care provider will examine your hair and scalp. Some of your hairs will be checked under a microscope or with a special magnifier used by skin doctors.

Blood tests may be ordered to check for anemia, thyroid disease, and other conditions.

Treatment

If you have a disorder that is causing trichorrhexis nodosa, it will be treated.

Your provider may recommend measures to reduce damage to your hair such as:

Outlook (Prognosis)

Improving grooming techniques and avoiding products that damage hair will help correct the problem.

This condition is not dangerous, but may affect a person's self-esteem.

When to Contact a Medical Professional

Call your provider if symptoms do not improve with changes in grooming and other home-care measures.

References

James WD, Berger TG, Elston DM. Diseases of the skin appendages. In: James WD, Berger TG, Elston DM, eds. Andrews' Diseases of the Skin. 12th ed. Philadelphia, PA: Elsevier; 2016:chap 33.

Patterson JW. Diseases of cutaneous appendages. In: Patterson JW, ed. Weedon's Skin Pathology. 4th ed. Philadelphia, PA: Elsevier Churchill Livingstone; 2016:chap 15.

A.D.A.M. content is best viewed in IE9 or above, Firefox and Google Chrome browser.