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Hautarzt 2002 Dec;53(12):798-804
TrichoScan. A new instrument for digital hair analysis
BACKGROUND/OBJECTIVE: Hair loss or hair thinning is a common complaint in clinical dermatology. Patients seeking advice for hair loss are not necessarily bald. In addition, the effects of therapy are hard to measure. Consequently, there is a need for a sensitive tool to monitor hair loss and treatment response. Such a method must be able to analyze the biological parameters of hair growth, which are: 1: hair density (n/cm(2)), 2: hair diameter (micrometer), 3: hair growth rate (mm/day) and 4: anagen/telogen ratio. PATIENTS/METHODS: We present the TrichoScan as a method which combines epiluminescence microscopy (ELM) with automatic digital image analysis for the measurement of human, and potentially animal hair, in situ. The TrichoScan is able to analyze all biological parameters of hair growth with a so called intraclass correlation of approximately 91% within the same operator and an intraclass correlation of approximately 97% for different operators. RESULTS: The application of the technique is demonstrated by comparison of the hair parameters in individuals without apparent hair loss with men with untreated AGA and men after treatment with finasteride (1 mg/day), and women who were treated with minoxidil. We were able to detect a significant increase in hair counts and cumulative hair thickness 3 and 6 months after treatment. CONCLUSION: The advantage of the TrichoScan is that it can be used for clinical studies to compare placebo versus treatment or to compare different hair growth promoting substances, it can be used for studying AGA or other forms of diffuse hair loss, and it can be adopted to study the effect of drugs or laser treatment on hypertrichosis or hirsutism.
Clin Exp Dermatol 2002 Jul;27(5):383-88
Female pattern hair loss.
Female pattern hair loss is a common condition characterized by a diffuse reduction in hair density over the crown and frontal scalp with retention of the frontal hairline. The prevalence increases with advancing age. It has been widely thought to be the female counterpart of male balding and is often referred to as female androgenetic alopecia. However, the role of androgens is not fully established. Scalp hair loss is undoubtedly a feature of hyperandrogenism in women but many women with female pattern hair loss have no other clinical or biochemical evidence of androgen excess. Female pattern hair loss is probably a multifactorial genetically determined trait and it is possible that both androgen-dependent and androgen-independent mechanisms contribute to the phenotype. In managing patients with female pattern hair loss the physician should be aware that the adverse effects on quality of life can be quite severe and do not necessarily correlate with the objective degree of hair loss. The treatment options are currently limited but modest improvements in hair density are achievable in some women.
Ther Umsch 2002 May;59(5):243-50
Scarring alopecias
The irreversibility and the possible important cosmetic consequences of scarring alopecia demand special diagnostic attention in order to promptly attain a precise diagnosis and specific treatment. Scarring alopecias are either due to permanent damage to essential parts of the hair follicle or destruction of the entire hair follicle. They are classified into the categories of primary scarring alopecias, where the hair follicle is the primary target of destruction, and secondary scarring alopecias, where the follicular damage results incidentally from events around impinging on the follicular unit. The differential diagnosis of the more common primary scarring alopecias, e.g. follicular lichen planus, chronic cutaneous lupus erythematosus and folliculitis decalvans, can be difficult when based only on anamnestic and clinical findings. The scalp biopsy is essential for appropriate nosologic classification and has prognostic relevance. The primary therapeutic goal is to halt progression of the irreversible process as early as possible by means of immunomodulatory, immunosuppressive or antiinfectious agents, respectively.
Dermatol Online J. 2003 Feb;9(1):4.
Pilot study of a novel treatment for androgenetic alopecia using enriched cell culture medium: clinical trials.
Androgenetic Alopecia (AA) afflicts a large part of the population and of the many treatments available today none is completely satisfactory. Testing the efficacy and safety of a novel topical treatment for AA which is based on cell culture medium supplemented with insulin, thyroxin and growth hormone (CCM). The 48 participants classified as androgenetic alopecia Type II, III or IV on the Hamilton scale, concluded a randomized, vehicle-controlled, double-blind trial of 6 months duration. Under occlusive cover the gel was self applied for at least 3 hours daily. Evaluation was based on hair counts, investigator global assessment and participants self-administered questionnaire. Cessation of hair loss was reported by most participants within 28 weeks, and further confirmed by the hair count (HC) in ~80% of participants. Moreover, as early as 4 months after the start of the treatment, a time dependent increase of up to 50% in HC was observed. The average change in HC between the two groups differed significantly (p=0.007), with values of 4.1% for control and 13.8% for CCM. Following 4 months of treatment, a time dependent increase in HC (>10%) above minimal was observed in 55% of the CCM and 25% of the control and this trend continued. At 6 months 63% of the CCM and 33% of the control group exhibited increase of HC higher than 10%. The average increase in HC in the CCM and the control groups was 17.1% and 8.9% respectively (p=0.035). Self evaluation questionnaires revealed a time dependent increase in satisfaction in the CCMusers compared to the control. While the average score at T2 was similar in CCM and control (2.7 and 2.6 respectively), the score at T6 in the CCM increased to 5.9 and decreased to -0.4 in the control (p=0.007). Global-clinical evaluation following six months treatment revealed significantly (p=0.02) more hair loss in the control group (40%) compared to the CCM (7%) treated group. CCM was found effective in treating androgenetic alopecia in men. It induced cessation of hair loss, increased rate of hair growth and appearance of new hair. No side effects were reported or observed.
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