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Dermatol Surg 2002 Sep;28(9):795-8; discussion 798-9
Does the recipient site influence the hair growth characteristics in hair transplantation?
BACKGROUND: Recently hair transplantation has been widely applied not only to correct androgenetic alopecia, but also to correct hair loss on other parts of the body such as the eyebrows and pubic area. It is believed that the transplanted hairs will maintain their integrity and characteristics after transplantation to new nonscalp sites. OBJECTIVE: To evaluate whether the transplanted hairs maintain their hair growth characteristics after transplantation to a new anatomic site other than the scalp. METHODS: Three study designs were used. Study I: Hair transplantation from the author's occipital scalp to his lower leg was performed and clinical evaluations were made at both 6 months and at 3 years after the transplantation. Study II: After finding changes in hair growth characteristics, transplanted hairs were harvested from the leg and retransplanted to the left side of the nape of the neck (group A). As a control study, occipital hairs were transplanted to the opposite side (group B). Observations were made at 6 months after the operation. Study III: An observational study was done in 12 patients with androgenetic alopecia about 1 year after transplantation of occipital hair to frontal scalp. At each step, survival rates were documented and the rate of growth and the diameter of the shafts were measured for both recipient and donor sites. RESULTS: Study I: Surviving hairs on the lower leg showed a lower growth rate (8.2 +/- 0.9 mm/month), but the same diameter (0.086 +/- 0.018 mm) compared with occipital hairs (16.0 +/- 1.1 mm/month, 0.088 +/- 0.016 mm). The survival rate 3 years after transplantation was 60.2%. Study II: There was no significant difference in the growth rate, shaft diameter, and survival rate between retransplanted hairs (group A) and controls (group B). Groups A and B showed a lower growth rate, but the same diameter, compared with occipital hairs. Study III: There was no significant difference in the growth rate and shaft diameter between the transplanted hairs on the frontal scalp and the occipital hairs. CONCLUSION: These results strongly suggest that the recipient site affects some characteristics of transplanted hairs, such as their growth and survival rates.
Pediatr Dermatol 2002 Jul-Aug;19(4):298-301
A clinical study of childhood alopecia areata in Singapore.
Alopecia areata (AA) is a common cause of nonscarring alopecia. The aim of this epidemiologic study is to review the clinical characteristics and treatment of childhood alopecia areata in a mixed ethnic population. The study population consisted of a total of 392 children seen over a 4-year period with AA diagnosed before the age of 16 years. The female:male ratio was 1:1.4. There were 309 Chinese (78.8%), 51 Malays (13.0%), and 32 Indians (8.2%). The mean age at the time of diagnosis was 11.2 years. The majority of patients (71.7%) had alopecia of less than 6-months duration and 6% had previous episodes of AA. Females appeared to have more severe involvement. A familial history of AA was observed in 33 patients (8.4%). Associated atopy was found in 26.6% of patients and in 32.3% of their first-degree relatives. Other associations such as vitiligo or Down syndrome were rare. For limited AA, topical and/or intralesional corticosteroid was the first-line treatment used and squaric acid dibutyl ester was the choice of treatment for patients with extensive involvement. The profile of the poor respondents to therapy included young age of onset, past history of AA, Down syndrome, and extensive involvement.
Cutis 2002 Apr;69(4):255-6
Congenital triangular alopecia: a case report and review.
Congenital triangular alopecia is a nonscarring loss of hair mass on the scalp's temporal regions. The area of hair diminution commonly is described as triangular or lancet shaped. Although previously considered congenital, this condition usually is noticed after 2 years of age and, more recently, is thought to be acquired. We propose that this entity be renamed triangular alopecia. Because this condition involves normal rather than inflamed skin, it does not respond to topical or intralesional steroids. It is important to make the correct diagnosis to avoid unnecessary and potentially harmful interventions. We present the case of a 10-year-old boy with triangular alopecia.
Eur J Cancer Care (Engl) 2001 Sep;10(3):147-63
Hair and cancer chemotherapy: consequences and nursing care--a literature study.
Hair is a body appendage that throughout history has been a symbol of the social, cultural and political climate, in addition to connoting religious affiliation. Hair loss on the other hand has been associated with a loss of attractiveness, individuality, a state of disgrace and illness, in addition to the ageing process, death and a loss of sexuality. One of the most common side-effects of chemotherapy is hair loss (alopecia). Alopecia can range from sporadic thinning of the hair to complete baldness. Several factors may contribute to the severity of hair loss including drug, dose and schedule as well as hair care practices. Prevention of alopecia has been a focus in the medical and nursing literature since the late 1960s. Mechanical, physical and biological measures have been used with varying success. The goal of prevention is primarily the reduction of patient distress caused by chemotherapy-induced alopecia. Patient reactions to alopecia vary and may be dependent on the individual importance of hair, prognosis, degree of expected hair loss, the amount of information and preparation given, and physical and psychological coping mechanisms. Nurses play an important role in assisting the patient to cope with alopecia by giving the needed information and teaching self-care strategies to minimize alopecia, cope with alopecia, and protect the skin and eyes following alopecia. These interventions are aimed at helping the patient move through a potentially devastating experience to a renewed sense of well-being.
Hair growth is a sophisticated biological process, which is still not thoroughly understood.
A multitude of therapeutic measures, including drugs, surgery, and suppelements have been made available, and used. However, due to the diversity of the problems underlying hair loss, there is no single solution for all hair loss cases. Most of chemical drugs and hair transplantation surgeries are not free from varying degrees of undesirable side effects on health.
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We only know by anecdotal observations. There has been no clinical trials nor placebo controlled statistical analysis on the efficacy of Hair Million on hair loss and hair growth.
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DHEA has been suggested to provide numerous potential benefits. DHEA (or dehydroepiandrosterone) is converted into androgens (male hormones)
or estrogens (female hormones) in the cells.
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