What makes hair stop growing?


Hair stops growing for many reasons, but one of the most common is the conversion of testosterone to the hormone DHT. As hair stops growing, the shafts eventually break, leading to male pattern baldness. After menopause, a woman's production of estrogen no longer counteracts DHT, leading to female pattern baldness, a condition in which the front hairline is preserved, but there is a general thinning of the hair.

According to HowStuffWorks, Alopecia areata is an autoimmune disease that attacks the hair follicles. The condition causes the hair to fall out and growth to slow. Under normal circumstances, hair begins to grow again after a few months. A related condition, alopecia universalis, causes loss of all the scalp and body hair.

Scars often stop hair growth in the affected area. Burns, skin infections or injury or X-ray treatments can leave scars on the scalp, eliminating hair follicles so that hair no longer grows in the area.

Telogen effluvium is a condition affecting the resting phase of hair growth, which is the final phase. Under normal circumstances, an individual loses 50 to 100 hairs daily in the hair growth cycle. However, those suffering telogen effluvium lose more hairs daily. Most cases last about six months, but chronic versions persist for years. In some cases, the hair begins to grow again on its own, but in others, medication helps to restore the growth cycle.

1 Additional Answer
Ask.com Answer for: what makes hair stop growing
What Makes Hair Stop Growing?
Hair may stop growing for a number of reasons. Lifestyle, diet, genetics and a number of other conditions regulate the rate of hair growth and conversely, hair loss. Some causes of hair loss, or lack of growth, can be mitigated through lifestyle changes.... More »
Difficulty: Easy
Source: www.ehow.com
Explore this Topic
Puberty is the time when the male body changes and grows. This includes things like the growth and development of the penis and body hair. The average male stops ...
You can grow out a hair perm by following a number of steps. This hair chemical can be grown out by not re-applying it to the hair. As the hair grows naturally ...
If you want to grow shaggy hair, avoid getting your hair cut or trimmed. This will allow your hair to grow out for that look. When you style your hair, try not ...
About -  Privacy -  Careers -  Ask Blog -  Mobile -  Help -  Feedback  -  Sitemap  © 2014 Ask.com