The only sign of alopecia areata is often sudden hair loss. The patches of hair loss can grow larger. Sometimes, the patches grow larger and become one large bald spot.
Other body hair is usually not affected and although hair may feel thinner, it is unlikely that patients would lose all their hair, and in many cases hair would grow back within six months. Alopecia areata on the other hand tends to lead to patches of baldness, usually on the scalp but can be anywhere on the body.
Patchy hair loss (alopecia areata)
In the type of patchy hair loss known as alopecia areata, hair loss occurs suddenly and usually starts with one or more circular bald patches that may overlap.
Sudden Loss of Patches of Hair
Bald spots may grow very slowly in one area or you may notice a patch or strip of hair loss that appears within just a day or two. In some cases, you may notice burning or stinging before sudden hair loss.
Causes of Alopecia Areata
In alopecia areata, the immune system mistakenly attacks hair follicles, causing inflammation. Researchers do not fully understand what causes the immune attack on hair follicles, but they believe that both genetic and environmental (non-genetic) factors play a role.
The condition can develop at any age, although most people develop alopecia areata for the first time before the age of 30. Alopecia areata is not life-threatening and does not cause physical pain. However, the psychosocial effects of hair loss can be devastating.
If you have alopecia areata, it generally doesn't cause pain or other symptoms. However, some people say that right before they lose their hair, they feel tingling, itching, or burning on the skin where the hair will fall out.
Everyone is born with hundreds of thousands of hair on the head. The hair cycle consists of three phases: the growth phase, which is called anagen, the resting phase, which is called catagen, and the shedding phase, which is the telogen phase.
The main symptom of alopecia areata is hair loss that occurs in small, round patches on your head. This leaves smooth, peach-colored areas of scalp exposed. A mild case of alopecia areata starts with one to two coin-size hairless patches. In many instances, it stops after that.
Sometimes, hair regrows on its own without treatment. This happens more often when someone has a few patches of alopecia areata, which have been there for less than 1 year.
Alopecia areata.
It can make you lose hair suddenly and seemingly out of the blue, according to NYU Langone Health. The condition happens when your body's immune system mistakenly attacks your hair follicles. Your hair may grow back on its own or with treatment, the American Academy of Dermatology says.
For some, it may take as short as 8 weeks to see improvement with treatment. For others, the same treatment may not work. It is said that most cases of alopecia areata last for a few months to a year, following which normal hair growth resumes. However, there may be cases of permanent hair loss as well.
Alopecia Areata
Hair from the scalp typically falls out in small patches and is not painful. Hair in other parts of the body, including the eyebrows and eyelashes, may also fall out. Over time, this disease may lead to alopecia totalis, or complete hair loss.
The extent of alopecia (how much hair has fallen out) varies and links to the different subtypes. Some said their hair loss involved one small patch about the size of a 1p coin which regrew after a few weeks or months. Others developed more patches which sometimes joined up into bigger bald areas over time.
How Long does Hair Loss Last? In half of patients with alopecia areata, individual episodes of hair loss last less than one year, and hair grows back without treatment. These patients may experience recurrent episodes of hair loss that spontaneously regrow or respond quickly to treatments.
A variety of factors are thought to cause alopecia areata (al-o-PEE-she-uh ar-e-A-tuh), possibly including severe stress. With alopecia areata, the body's immune system attacks the hair follicles — causing hair loss.
Ways to Stop Alopecia Areata from Spreading or Worsening
Avoiding unnecessary hair or scalp trauma, reducing stress and analyzing your diet are all worthwhile endeavors when attempting to prevent alopecia areata from spreading.
Thankfully, mild cases of alopecia areata often get better without treatment within a few months to a year. In some cases, patchy baldness may come and go over many months or years. The size of the bald patch or patches and how long they last are quite variable.
Female-pattern baldness is a pattern of hair loss (alopecia) caused by hormones, aging and genetics. Unlike male-pattern baldness, female-pattern baldness is an over-all thinning which maintains the normal hairline.
Is alopecia contagious? Alopecia is not contagious. Individuals who develop alopecia areata typically have both a family history and some type of environmental trigger, such as emotional or physical stress.
There is no cure for AA. While treatments may promote hair growth, new patches of hair loss may continue to appear. The treatments are not a cure. Only the body, itself, can eventually turn off the condition.
The Ludwig scale defines three broad stages of hair loss. In stage 1, the hair on the top of the head begins thinning. In stage 2, the scalp starts to become visible. In stage 3, all of the hair at the crown may be lost, resulting in baldness.
Alopecia areata is a common autoimmune skin disease, causing hair loss on the scalp, face and sometimes on other areas of the body. In fact, it affects as many as 6.8 million people in the U.S. with a lifetime risk of 2.1%. People of all ages, both sexes and all ethnic groups can develop alopecia areata.
Alopecia areata (AA) occurs when the immune system attacks the hair follicle. Studies have shown a relationship between AA and low vitamin D levels. Vitamin D should be supplemented if levels are low.