Alopecia areata is a condition that causes your hair to fall out in patches. These patches may connect and then become more noticeable. The condition develops when your immune system attacks the hair follicles causing hair loss.
In most people, new hair eventually grows back in the affected areas, although this process can take months. Approximately 50 percent of people with mild alopecia areata recover within a year; however, most people will experience more than one episode during their lifetime.
Circle hair is a rare body-hair disorder characterized by the presence of hair rolled in perfect or nearly perfect concentric circles under a thin layer of stratum corneum without accompanying follicular hyperkeratosis or signs of inflammation. The condition was first described by Adatto in 1963.
Alopecia areata is a disease that develops when the body's immune system attacks hair follicles (what holds the hair in place), causing hair loss. You can lose hair anywhere on your body, including your scalp, inside your nose, and in your ears. Some people lose their eyelashes or eyebrows.
Yes, stress and hair loss can be related. Three types of hair loss can be associated with high stress levels: Telogen effluvium. In telogen effluvium (TEL-o-jun uh-FLOO-vee-um), significant stress pushes large numbers of hair follicles into a resting phase.
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.
Alopecia areata
It develops when your immune system attacks your hair follicles. This may be triggered by stress, and it can result in hair loss. Hair may be lost in round patches on the scalp, or across the entire scalp. In a more severe form of AA known as alopecia universalis, hair is lost from the entire body.
Alopecia areata frequently presents as the sudden onset of smooth, round, hairless patches on the scalp. The affected areas are usually skin-colored but may have a peach color. Occasionally, there are scattered short colored or white hairs within the hairless patch.
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.
If you're dealing with a temporary form of hair loss, your bald spot will likely grow back on its own. However, when bald spots or thinning are due to aging and genetics, that's not always the case. There are scientifically proven ingredients, such as minoxidil, that can help early hair loss.
After hair stops shedding, the hair will slowly grow back. This can take 6 to 8 months for all the hair to grow back. The whole cycle takes about 12 months. This type of hair loss is called telogen effluvium.
Most bald spots are treatable, there are hair products for bald spots, either using medication, by making changes to your lifestyle or by undergoing surgery to transplant hair to the area that's affected by 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.
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.
When does alopecia areata begin? You can get alopecia areata at any age; however, most people develop it by 30 years of age. For many, the disease begins during childhood or the teenage years.
It is not contagious; you can't catch AA from someone who has it. Researchers believe AA is an autoimmune disease such as rheumatoid arthritis, but in this case the individual's own immune system attacks hair follicles instead of bone joints.
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.
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.
Prolonged periods of stress can result in telogen effluvium. Hair loss typically occurs about 3 months after the stressful event.
The hair loss is temporary, and should return to its pre-effluvium density, although this process is generally slow. It can take months (but generally less than 6) before the shedding stops, and then months to years for lost hair to grow back at the sluggish rate of ~½ inch per month.
The human body produces the hormone melatonin. This hormone has been confirmed by researchers to regulate the sleep cycle and increase hair growth. While sleep has a direct impact on the human body's natural hormones, it means that poor sleep reduces the amount of melatonin, potentially cause hair loss.
Most people know alopecia to be a form of hair loss. However, what they don't always know is that there are three main types of the condition – alopecia areata, alopecia totalis and alopecia universalis.
For 1/3 of people with alopecia areata with a single patch, the hair will grow back in 6 months even without treatment. For another 1/3 of people, it will grow back in 1 year without treatment. For 1/3 it does not grow back on its and hair loss worsens without treatment.