Hair loss

Most people have many hairs on their head.

We lose some hair every day. This is normal. But sometimes, hair falls out in big ways. This can happen to men and women.

Some people lose hair because of their family. Others lose hair when they are very stressed. Even some medicines can make hair fall out. Some people lose hair in small round spots. It is a common thing to happen.

Many people find ways to live with it.

Most people have many hairs on their head. We have between 100,000 and 150,000 hairs. It is normal to lose about 100 hairs every day.

But sometimes, hair loss happens in different ways. This is often called alopecia.

Some hair loss comes from our genes. This means it runs in families. Male-pattern hair loss is common. It is caused by genes and male hormones.

Women can also have hair thinning, but the cause is not clear.

Other types of hair loss happen for different reasons. Alopecia areata is an autoimmune disorder. This is when the body's own defense system attacks the hair. It can leave round, bald spots.

Another type is telogen effluvium. This happens after a very stressful event. It can also happen after a woman has a baby.

Sometimes, hair loss is caused by things outside the body. Pulling on hair too hard can cause it. Certain medicines can also make hair fall out. Some people choose to shave their heads to help them feel better.

Hair loss is a very common experience for many people. It is often called alopecia or baldness. This means losing hair from parts of the head or the body. Sometimes a person only loses hair in a small area. Other times, hair might be lost from the entire body. Most people notice hair thinning in their hairbrush or the sink.

A person might have between 100,000 and 150,000 hairs on their head. It is normal to lose about 100 hairs every day. To keep the same amount of hair, new hair must grow back at the same rate.

Hair grows in a special way using cycles. Each cycle has a long growing phase called anagen. After that, there is a short resting phase called telogen. In a condition called telogen effluvium, many hairs enter the resting phase at the same time. This causes a lot of hair to shed at once. This often happens after a very stressful event or a major surgery. It is also very common for women to see hair loss after they have a baby.

This happens because estrogen levels drop about two to five months after childbirth.

There are many different reasons why hair might fall out. Male-pattern hair loss is caused by a mix of genetics and male hormones. This often starts at the temples or the crown of the head. For women, the exact cause of pattern hair loss is still unclear. Another type is alopecia areata, which is an autoimmune disorder. This is when the body's defense system attacks the hair follicles. It can cause hair to fall out in round patches.

Some people also lose hair because of certain medicines or infections.

Some causes of hair loss come from things happening to the body. For example, pulling hair too hard can cause traction alopecia. This often happens with tight ponytails or cornrows. Other people might lose hair from rubbing, which is called frictional alopecia. Even tiny mites can cause hair to thin by eating nutrients.

Some medical treatments, like chemotherapy, can cause almost 90% of hair to fall out. This is because the treatment targets cells that are dividing quickly.

Losing hair can be a hard job for how a person feels. Many people think hair is a big part of who they are. Men might associate full hair with being young and strong. Women often feel hair represents femininity. Because of this, hair loss can cause psychological distress. Some people choose to shave their heads to feel better.

Others might try medications like minoxidil or even hair transplant surgery. Many people find that accepting the change helps them feel more comfortable.

Hair loss, also known as alopecia or baldness, is the loss of hair from parts of the head or the body. This condition can range from losing hair in tiny patches to losing hair across the entire body. While hair loss is a common experience, it does not always involve inflammation or scarring. For many, hair is a major part of their identity and self-image. Men often associate a full head of hair with youth and vigor. Women may view hair as a symbol of femininity and attractiveness. Because of these connections, hair loss can lead to psychological distress.

To understand hair loss, one must understand the hair growth cycle. Hair grows in specific stages. The first is the anagen phase, which is a long growing phase. This is followed by a short resting phase called the telogen phase. In a condition called telogen effluvium, a large number of hairs enter the telogen phase at the same time. This results in sudden shedding and thinning. This often happens after major physical or psychological stress. Examples include childbirth, major surgery, or poisoning.

There are several distinct types of pattern hair loss. Male-pattern hair loss is caused by a combination of genetics and male hormones, specifically dihydrotestosterone. This usually begins at the temples and the crown. Female-pattern hair loss also occurs, but the exact cause remains unclear. In women, this thinning typically happens at the frontal and parietal areas of the scalp. Another type is alopecia areata, which is an autoimmune disorder. In this condition, the body's immune system attacks the hair follicles. This can cause hair to fall out in circular patches.

Other causes of hair loss involve external factors or specific medical conditions. Traction alopecia is caused by pulling hair with excessive force, such as through tight ponytails or cornrows. Frictional alopecia occurs from the constant rubbing of hair or follicles. Some people also experience trichotillomania, which is the compulsive pulling of hair. Medical treatments can also be a major factor. For example, chemotherapy targets rapidly dividing cells. This can cause almost 90% of hair to fall out shortly after treatment begins.

Infections and skin diseases can also trigger hair loss. Fungal infections, such as tinea capitis, can cause hair to fall out. Microscopic mites called Demodex folliculorum can also cause thinning. These mites live in oily scalp environments and feed on sebum. This process denies the hair essential nutrients. Other conditions like lupus erythematosus or sarcoidosis cause hair loss accompanied by inflammation or scarring. Even certain hormonal imbalances, such as hypothyroidism, can lead to frontal hair thinning.

Statistics show how widespread these conditions are. By age 50, pattern hair loss affects about half of all men. It also affects about a quarter of all women. Approximately 2% of the population will develop alopecia areata at some point. A healthy head typically has between 100,000 and 150,000 hairs. On average, a person loses about 100 strands of hair every day. To maintain normal hair volume, the body must replace hair at the same rate it is lost.

Managing hair loss involves various medical and personal approaches. For pattern hair loss, people may use medications like minoxidil or finasteride. Some individuals choose hair transplant surgery to restore hair. For alopecia areata, doctors may use steroid injections in the affected areas. However, these injections often need to be repeated to stay effective. Some people find relief through acceptance or by shaving their heads. Understanding the specific cause is the first step in determining the best way to handle the condition.