^ Jump up to: a b Blumeyer, A; Tosti, A; Messenger, A; Reygagne, P; Del Marmol, V; Spuls, PI; Trakatelli, M; Finner, A; Kiesewetter, F; Trüeb, R; Rzany, B; Blume-Peytavi, U; European Dermatology Forum, (EDF) (October 2011). "Evidence-based (S3) guideline for the treatment of androgenetic alopecia in women and in men". Journal of the German Society of Dermatology. 9 Suppl 6: S1–57. doi:10.1111/j.1610-0379.2011.07802.x. PMID 21980982.

Although a fever technically is any body temperature above the normal of 98.6 F (37 C), in practice, a person is usually not considered to have a significant fever until the temperature is above 100.4 F (38 C). Fever is part of the body's own disease-fighting arsenal; rising body temperatures apparently are capable of killing off many disease-producing organisms.
Scarring alopecias result in permanent loss of hair. Inflammatory skin conditions  (cellulitis, folliculitis, acne), and other skin disorders (such as some forms of lupus and lichen planus) often result in scars that destroy the ability of the hair to regenerate. Hot combs and hair too tightly woven and pulled can also result in permanent hair loss.

Androgenetic alopecia. Among adults, the most common cause of hair loss is androgenetic (pronounced: an-druh-juh-NEH-tik) alopecia. This is sometimes called male- or female-pattern baldness. This condition is caused by a combination of things, including a person's and hormones called androgens. This kind of hair loss can sometimes start as early as the mid-teen years. It also can happen to people who take steroids like testosterone to build their bodies.
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Back in the 17th century, men were told that coating their balding heads with chicken faeces would help them regain a full head of long glossy locks. While we might have moved on somewhat since then, we still don’t fully understand the science behind hair loss and hair regrowth and, unfortunately, there are still some very common myths about hair remedies that we are far too quick to believe. 
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.
If you do decide to start treatment to save your hair, a good place to start is with minoxidil, more commonly known as Rogaine. Don’t expect this hair-loss treatment to create luscious locks; minoxidil is better at slowing down or preventing more loss rather than promoting hair growth. But, according to Dr. Amy McMichael, professor and chair of Wake Forest Baptist Medical Center’s Department of Dermatology, it is effective “if used as recommended, with evidence of improvement seen around six to nine months.” Simply massage the foam or solution into your scalp once or twice daily, and for best results, use a formula with 5 percent concentration.
A key aspect of hair loss with age is the aging of the hair follicle.[43] Ordinarily, hair follicle renewal is maintained by the stem cells associated with each follicle. Aging of the hair follicle appears to be primed by a sustained cellular response to the DNA damage that accumulates in renewing stem cells during aging.[44] This damage response involves the proteolysis of type XVII collagen by neutrophil elastase in response to the DNA damage in the hair follicle stem cells. Proteolysis of collagen leads to elimination of the damaged cells and then to terminal hair follicle miniaturization.
Central centrifugal cicatricial (scarring) alopecia: This type of hair loss occurs most often in women of African descent. It begins in the center of the scalp. As it progresses, the hair loss radiates out from the center of the scalp. The affected scalp becomes smooth and shiny. The hair loss can be very slow or rapid. When hair loss occurs quickly, the person may have tingling, burning, pain, or itching on the scalp. Treatment may help the hair re-grow if scarring has not occurred.
Generally, hair problems, especially hair thinning and hair loss, occur around the anagen phase or the resting phase. As we age, the length of the anagen phase also decreases as the hair follicles receive less and less nourishment from the body. The result is hair that is weaker and thinner after every cycle. In some cases, the hair enters the resting phase too early (or the catagen phase is too short) and this is when excessive shedding also happens.
Beware online stores selling Propecia without a prescription.Finasteride is FDA approved, but buying it online without a prescription can be illegal and dangerous. Prescription-free online stores have a reputation for selling placebos or dangerous replacements. We recommend speaking with a doctor about prescriptions or sticking to save over-the-counter treatments.
A bathroom covered with loose strands or an ever-scrawnier ponytail can be startling but doesn't necessarily mean anything's wrong. By age 50, half of women will complain of hair loss. "As we age, overall hair density changes and individual strands become finer," says dermatologist Doris J. Day, MD. But just because thinning is natural doesn't mean you have to accept it. Here are 13 solutions to help you keep the hair out of your brush and on your head.
Dandruff is definitely the most embarrassing one among all the common hair problems, especially with those having the dark- colored hair. Little dandruff that clings to hair roots really destroys one’s appearance and confidence. This hair problem is often resulted from an infection, a poor diet, Seborrheic dermatitis, Yeast, Certain skin conditions or maybe a sluggish metabolism [5].
Harklinikken does not advertise, but the 25-year-old multinational company is beginning an aggressive expansion into the $3.6 billion hair-loss market in the United States, meaning you’re likely to hear a lot more about it. A New York clinic opened in June inside the Core Club in Midtown (you don’t need to be a member to get an appointment); and in August, Harklinikken consultations became available at some 70 Women’s Care Florida obstetrics and gynecology clinics. (Roughly 75 percent of the company’s 50,000 active users are female.)
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