References: Hair growth and hair loss
Dermatol Surg. 1999 Jun;25(6):475-9.
Hair restoration surgery in patients with hypotrichosis of the pubis: the reason and ideas for design.
Hong CK, Choi HG.
Department of Dermatology, College of Medicine, Chung Ang University, Seoul, Korea.
BACKGROUND: Hypotrichosis of the pubis is not an uncommon condition, especially in oriental women. Besides the aesthetic problem, this condition may cause low self-esteem, social embarrassment, and psychologic problems to patients. There have been many efforts to correct this condition medically and surgically for decades. Among them hair restoration surgery is thought to be the only definitive therapeutic modality at present. OBJECTIVE: Our purpose was to show the importance of preoperative evaluation of what type of pubic hair patterns the patients may seek and thereafter to make a design based on the patients' desire and physiologic feature of pubic hair for the natural-appearing results and satisfaction of the patients. METHODS: Ten female patients were enrolled in this study aged between 23 and 48 years with pubic hair maturity index class I-III. For selection of a patients' favored pubic hair pattern, we provided photograph samples of pubic hair patterns that consisted of four types as previously documented: horizontal, sagittal, acuminate, and disperse. We restored hairless mons using a conventional one- to three-haired mini-micrograft technique. RESULTS: Five patients belonged to the pubic hair maturity index class I, four to class II, and one to class III. Seven of 10 patients wanted a horizontal (inverted triangular) type, which is most commonly seen in young females, 2 patients wanted acuminate, and 1 wanted sagittal. Eight patients underwent a single-session operation, while two others underwent operations twice. The two patients requiring two operation sessions belonged to a group of class I pubic hair and desired acuminate-type hair. Most patients were satisfied with the results of their operations. CONCLUSION: In designing a pubic hair graft, it is important to know the patients' desire and to make a design based on it for the satisfaction of the patients and for natural-appearing results. Before the procedure, dermatologic surgeons should have to consider a grafted hair line, the distribution, density, and directions of the hair shaft, and the angling of the hair to the skin.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=10469095&dopt=Abstract
Dermatol Surg. 2002 Jun;28(6):500-3.
The distribution of follicular units in the Chinese scalp: implications for reconstruction of natural-appearing hairlines in Orientals.
Tsai RY, Lee SH, Chan HL.
Department of Dermatology and Skin Laser Center, Taipei Municipal Wan Fang Hospital, Taipei Medical University, Taiwan.
BACKGROUND: Follicular transplantation using hair in its naturally occurring groups, called follicular units (FUs), has become the most popular technique in hair restoration surgery. Recently follicular transplantation was performed with a qualitative and quantitative concept to achieve the best clinical result. The characteristics and distribution of FUs are well studied in Caucasians and widely applied in hair transplantation surgery. OBJECTIVE: In order to understand the normal distribution of FUs in the Chinese scalp, we counted the number of hairs and FUs in normal Chinese scalp to provide general information for surgical planning and design in bald Chinese patients. METHODS: A total of 50 normal and 50 bald Chinese adults were enrolled to count the hairs on their scalp. One hundred bald patients receiving hairline reconstruction were also prospectively quantitatively evaluated. RESULTS: In normal Chinese scalp, an average 71.78 FUs/cm(2) and 137.08 hairs/cm(2) were calculated with a follicular density of 1.91 hairs/FU. Two-hair FUs are the predominate group (50.29%). In bald patients, an average of 68.07 FUs/cm(2) was found, which was less than that of the occipital scalp in normal nonbald patients. In reconstruction of the frontal hairline, a total of 700-1000 FUs were implanted with an average density of 30 FUs/cm(2). CONCLUSION: We found the average number of FUs (0.72 FU/mm(2)) was less than that in Caucasian patients (1 FU/mm(2)). The average density of 30 FUs/cm(2) implanted was suitable to reconstruct a natural frontal hairline in bald Chinese patients, which can achieve about 40% of normal hair density. Our results could provide the hair surgeon with general information about hair distribution on the Chinese scalp for surgical planning and design in their patients.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12081679&dopt=Abstract
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BACKGROUND: Lasers and light sources are now used worldwide for permanent or prolonged hair removal. Patients now prefer lasers and light sources for hair removal because of their noninvasiveness and fewer reported side effects. OBJECTIVE: To study and report on leukotrichia that developed following application of intense pulsed light (IPL). METHODS: From February 9, 2001 to February 14, 2002 a total of 821 patients were treated for unwanted hair. The system used was a noncoherent IPL system, with a 650 nm flashlamp filter; the parameters used varied with different Fitzpatrick skin types. The patients were treated monthly, with the rate of hair loss, measured by hair counts, and possible side effects recorded. RESULTS: Twenty-nine of 821 patients treated developed leukotrichia. Thirteen patients had no white or gray hairs before IPL therapy; the remaining 16 patients, who had few white hairs before treatment reported accelerated development of new white hairs starting after the first or second IPL therapy. Restoration of hair color occurred in 9 patients and the remaining 20 patients had no improvement or worsening of the condition within the next 2-6 months. CONCLUSION: Temporary or permanent leukotrichia may develop following IPL and laser hair removal therapy. This finding may be explained by the difference in the thermal relaxation times of melanocytes and germinative cells. The light absorbed and the heat produced by melanin may be sufficient enough to destroy or impair the function of melanocytes but insufficient to damage the hair follicle cells.
online pharmacy ref. source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12135507&dopt=Abstract
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