Possible causes of hair loss include:
1. Androgenetic alopecia
Both male and female pattern baldness is genetic. Males tend to lose hair from the temples and crown of the head. In females, hair usually becomes thinner all over the head.
Androgenetic alopecia is more likely to happen as a person ages but can start at any point after puberty. Many females who experience androgenetic alopecia develop it after going through the menopause. This means that hormones may have something to do with it.
It is possible to treat this condition with minoxidil, a medication for hair growth.
Some women may experience excessive hair loss shortly after giving birth. This is due to a decrease in estrogen levels. This type of hair loss is a temporary condition and usually resolves within a year or sooner.
To help hair return to its normal condition, try:
- using a volumizing shampoo and conditioner
- using products designed for fine hair
- avoiding intensive conditioners or conditioning shampoos as these can be too heavy for fine hair
- applying conditioner to the ends of the hair, rather than the scalp, to avoid weighing hair down
3. Telogen effluvium
Telogen effluvium is a condition where the hair remains in the telogen (natural shedding) phase of the growth cycle. This causes more hair to fall out, sometimes in handfuls.
Telogen effluvium is usually a temporary condition that resolves over time. It is advisable to see a doctor to find out the cause.
Some possible causes include:
A doctor will need to treat any underlying causes of telogen effluvium.
If a doctor suspects that specific medications are causing hair loss, they may change them.
4. Anagen effluvium
Anagen effluvium causes large amounts of hair to fall out rapidly during the anagen (growth) phase of the hair cycle.
The condition may cause hair to fall out from the head, as well as from other parts of the body, including eyebrows and eyelashes.
Causes of anagen effluvium include:
Treatment for this condition depends on the cause but can include a topical solution of minoxidil.
5. Alopecia areata
Alopecia areata is an autoimmune condition that causes hair to fall out suddenly. The immune system attacks hair follicles, along with other healthy parts of the body.
Hair from the scalp, as well as eyebrows and eyelashes, may fall out in small chunks.
If a person has this condition, they should see a doctor. A doctor may prescribe medication to help the hair grow back.
6. Traction alopecia
Traction alopecia is hair loss due to pulling hair into tight hairstyles, which causes it to break and come loose. Hairstyles associated with this condition include:
- tight buns or ponytails
If traction alopecia continues, a person may develop bald spots and thinning of the hair.
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In terms of self-care, avoiding tight hairstyles will usually prevent further damage.
Certain medications have side effects that can cause hair to fall out.
Examples of such medications include:
- blood thinners, such as warfarin
- Accutane, to treat acne
- antidepressants, including Prozac and Zoloft
- cholesterol-lowering drugs, such as Lopid
If a person thinks hair loss may be due to a medication they are taking, they should consider seeing a doctor for an assessment. The doctor might be able to reduce the dosage or switch the person to a different medication.
8. Nutritional deficiencies
A person should see a doctor for a blood test to check if they have a nutritional deficiency that could be causing their hair to fall out.
9. Birth control pills
If people are taking birth control pills, they can choose one that has a low androgen index. This may help to lower the risk of hair loss.
Examples of birth control pills with a lower androgen index include:
Ovral and Loestrin have a higher androgen index.
Other forms of birth control that affect the hormones, such as implants and skin patches, may also cause hair loss.
The American Hair Loss Association recommend that people who have an increased risk of genetic hair loss opt for a non-hormonal type of birth control.
- a small spot that gets bigger, causing scaly, bald patches of skin
- brittle hair that breaks easily
- itchy, red patches of skin in the affected areas
- oozing blisters on the scalp
- ring-like patches, with a red outside and the inside of the circle matching the skin tone
If ringworm does not heal by itself, then a doctor may prescribe an antifungal medicine. Alternatively, they may prescribe an antibiotic, such as Griseofulvin.
To prevent hair loss, people may want to try:
- lifestyle changes to reduce stress
- eating a nutritious diet that includes proteins, fats, and certain vitamins and minerals
The following may also help to stop further hair loss:
- using a lightweight shampoo and conditioner to avoid weighing down the hair
- avoiding tight hairstyles
- limiting the use of heating processes that can damage the hair
It is normal for a certain amount of hair to fall out every day. People usually lose up to 100 hairs each day.
If a person notices that they are losing more hair than usual, they may have an underlying condition. In that instance, they should see a doctor and seek advice on what the best treatment options are.
In many cases, a person’s hair will return to its normal state once a doctor has treated the underlying condition.