Alopecia areata is an autoimmune disorder also known as "spot baldness" that can result in hair loss ranging from just one location (Alopecia areata monolocularis) to every hair on the entire body (Alopecia areata universalis). Although thought to be caused by hair follicles becoming dormant, what triggers alopecia areata is not known. In most cases the condition corrects itself, but it can also spread to the entire scalp (alopecia totalis) or to the entire body (alopecia universalis).
Just like pregnancy, birth control pills mess with your hormone levels, causing them to fluctuate. In response, you might experience hair loss. “Hormones can interrupt the natural pattern of the hair cycle, causing hairs to shed more quickly than usual or to grow with less vigor,” explains Dominic Burg, PhD, chief scientist for Advangen. Oftentimes the hormone responsible for this is an androgen, such as testosterone, which is why the American Hair Loss Association recommends low-androgen birth control pills for those who are at an increased risk for hair loss.
Hair concealers and hair fibers. These are one of the newest cosmetic answers to hair loss. As the name suggests, these products are applied on the scalp or hair to camouflage hair loss and give the appearance of fullness to thinning hair. Some of these are applied directly on the scalp, while others (hair fibers) are attached to the hair, much like hair extensions, to add volume.

Initially used to treat high blood pressure, minoxidil was the first medication approved by the FDA to treat male pattern baldness. By applying Rogaine (or a generic version) directly to the scalp twice a day, a man in the early stages of hair loss can often stimulate growth. The American Hair Loss Association points out that results of treatment with minoxidil are limited, but it still endorses using it in combination with other treatments or as an alternative if finasteride doesn't work.


Propecia (finasteride) is a 5 alpha-reductase inhibitor. It works by inhibiting the conversion of testosterone into 5 alpha-dihydrotestosterone (DHT), a hormone that plays an important role in hair loss. Propecia is a prescription medicine and is only approved for use in men. There are other 5 alpha-reductase inhibitors on the market but Propecia is the only one approved for androgenetic alopecia.

Just as pregnancy hormone changes can cause hair loss, so can switching or going off birth-control pills. This can also cause telogen effluvium, and it may be more likely if you have a family history of hair loss. The change in the hormonal balance that occurs at menopause may also have the same result. “The androgen (male hormone) receptors on the scalp becoming activated,” explains Mark Hammonds, MD, a dermatologist with Scott & White Clinic in Round Rock, Texas. “The hair follicles will miniaturize and then you start to lose more hair.”
Natural hair that is subjected to constant physical trauma from excessive brushing or combing, tight braids or ponytails, or extreme scratching or massage can cause hair at the temples to become weak and to stop growing to its normal length. Clean shaving, especially for men, can cause white bumps to appear on the area where the hair was shaved short, and at times can become infected with pus and leave permanent scarring, affecting hair growth.
This makes finding reliable information a challenge, and to further complicate matters, successful hair loss treatment doesn’t come in the form of a quick fix. It’s something that takes time to work – usually a couple of months – and requires consistency and dedication. A lot of people simply quit because they don’t see major results in the first couple of weeks and assume that the treatment doesn’t work .

What’s got less evidence supporting its efficacy are the hair-growth shampoos that claim to block DHT (like those sold by Hims in their Rx Hair Kit). Rieder is skeptical that you’re going to see any tangible benefits by rubbing DHT blockers into your scalp. “I find it very difficult to believe that something that’s applied to the scalp and rinsed off is going to have any appreciable effect.” All four doctors also shut down any suggestions that hair-growth supplements or vitamins, like biotin, could help promote hair growth or stop hair loss — though a couple hypothesized that vitamins or supplements could lead to hair regrowth if your hair loss was a result of a nutritional deficiency. But otherwise, if you’re dealing with regular old male-pattern baldness, “There is no such thing as a ‘hair vitamin,’” says McMichael.
An unhealthy scalp environment can play a significant role in hair thinning by contributing to miniaturization or causing damage.[citation needed] Air and water pollutants[citation needed], environmental toxins,[citation needed] conventional styling products and excessive amounts of sebum have the potential to build up on the scalp.[citation needed]. This debris can block hair follicles and cause their deterioration and consequent miniaturization of hair.[citation needed]. It can also physically restrict hair growth or damage the hair cuticle[citation needed], leading to hair that is weakened and easily broken off before its natural lifecycle has ended.[citation needed]
Hair practices. Our hair is one of the strongest and most elastic parts of our body. One strand of a healthy hair can be twice as strong as a copper wire of similar thickness. However, not all hair types are equal. Unfortunately, hair care practices and styling can lead to scalp damage and unnecessary pressure on the hair follicles, resulting in hair breakage and loss.
It is best to start treating your hair loss as early as possible, as it is easier to prevent hair being lost than to regrow it. Nevertheless, Propecia - and its active ingredient Finasteride - has proven to be an extremely successful treatment, in both preventing loss and encouraging regrowth. Although success varies according to the length of time the medicine taken, around two thirds of men who use it benefit from renewed hair growth, while hair loss is halted in most other men.
There is no hard and fast answer. With Regaine Extra Strength results may be seen after 8 weeks. Clinical studies have shown that for Regaine Regular Strength or Regaine Gel for men regrowth can occur as early as 16 weeks. But remember that everyone is different so you need to be patient. Studies suggest that Regaine should be tried for 6-12 months before deciding whether to continue.
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