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Causes

A sudden physical or emotional stress may cause one-half to three-quarters of the hair throughout your scalp to shed (called Telogen effluvium). You will notice hair coming out in handfuls while you shampoo, comb, or run your hands through your hair. You may not notice this for weeks to months after the episode of stress. The hair shedding will decrease over 6 - 8 months.

Cause of this type of hair loss are:

• High fever or severe infection
• Childbirth
• Major surgery, major illness, sudden blood loss
• Severe emotional stress
• Crash diets, especially those that do not contain enough protein
• A number of medications, including retinoids, birth control pills, beta-blockers, certain antidepressants, NSAIDs (including iburpofen) and calcium channel blockers

Some women ages 30 - 60 may notice a thinning of the hair that affects the entire scalp. The hair loss may be heavier at first, and then gradually slow or stop. There is no known cause for this type of hair loss.

Other possible causes of hair loss, especially if it is in an unusual pattern, include:

• Alopecia areata -- bald patches that develop on the scalp, beard, and, possibly, eyebrows. Eyelashes may fall out as well.
• Anemia
• Autoimmune conditions such as lupus
• Burns
• Certain infectious diseases such as syphilis
• Excessive shampooing and blow-drying
• Hormone changes
• Thyroid diseases
• Nervous habits such as continual hair pulling or scalp rubbing
• Radiation therapy
• Tinea capitis (ringworm of the scalp)
• Tumor of the ovary or adrenal glands

Home Care

Hair loss from menopause or childbirth often returns to normal 6 months to 2 years later.

For hair loss due to illness (such as fever), radiation therapy, medication use, or other causes, no treatment is necessary. The hair will usually grow back when the illness has ended or the therapy is finished. You may want to wear a wig, hat, or other covering until the hair grows back.

Hair weaves, hair pieces, or changes of hair style may disguise hair loss. This is generally the least expensive and safest approach to hair loss. Hair pieces should not be sutured to the scalp because of the risk of scars and infection.

When to Contact a Medical Professional

Call your doctor if:

• You are losing hair in an unusual pattern
• You are losing hair rapidly or at an early age (for example, in your teens or twenties)
• You have any pain or itching with the hair loss
• The skin on your scalp under the involved area is red, scaly, or otherwise abnormal
• You have acne, facial hair, or an abnormal menstrual cycle
• You are a woman and have male pattern baldness
• You have bald spots on your beard or eyebrows
• You have been gaining weight or have muscle weakness, intolerance to cold temperatures, or fatigue

What to Expect at Your Office Visit

A careful medical history and examination of the hair and scalp are usually enough to diagnose the cause of your hair loss.

Your doctor will ask detailed questions such as:

• Are you losing hair only from your scalp or from other parts of your body as well?
• Is there a pattern to the hair loss, like a receding hairline or thinning or bald areas on the crown, or is the hair loss throughout your head?
• Have you had a recent illness or high fever?
• Do you dye your hair?
• Do you blow dry your hair? How often?
• How often do you shampoo your hair?
• What kind of shampoo, hair spray, gel, or other product do you put on your hair?
• Have you been under unusual stress lately?
• Do you have nervous habits that include hair pulling or scalp rubbing?
• Do you have any other symptoms like itching, flaking, or redness of your scalp?
• What medications do you take, including over-the-counter drugs?

Tests that may be performed (but are rarely needed) include:

• Blood tests to rule out disease
• Microscopic examination of a plucked hair
• Skin biopsy

Ringworm on the scalp may require the use of an oral drug, such as griseofulvin. Creams and lotions applied to the affected area may not get into the hair follicles to kill the fungus.

For more information on treatment, see also:

• Alopecia areata
• Female pattern baldness
• Male pattern baldness

Alternative Names

Loss of hair; Alopecia; Baldness; Telogen effluvium

References

Mousney AL, Reed SW. Diagnosis and treating hair loss. Am Fam Physician. 2009;80:356-362.

Habif TP. Hair diseases. In: Habif TP, ed. Clinical Dermatology. 5th ed. Philadelphia, Pa: Mosby Elsevier; 2009:chap 24.

Update Date: 5/13/2011

Updated by: Kevin Berman, MD, PhD, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org). URAC's accreditation program lWww Datinghair Dating Hair L Hair Women En 1 Dating Hair Hair loss: MedlinePlus Medical Encyclopediau f f Hair f f Dating Hair Dating Hair zWww Datinghair Dating Hair L Hair Women En 1 Dating Hair Hair loss: MedlinePlus Medical Encyclopediac Sexual Sex