A Clinical Study of Androgenetic Alopecia (VI) / 대한피부과학회지

ABSTRACT

BACKGROUND: Androgenetic alopecia is the most common form of hair loss in people with a genetic predisposition. It is characterized by the miniaturization of terminal hair follicles and the formation of vellus-like follicles. OBJECTIVE: The aim of this study was to evaluate the prevalence, clinical manifestation, genetic and endocrine factor, and associated diseases of Korean patients with androgenetic alopecia. METHODS: We studied 789 Korean men and women with androgenetic alopecia. A detailed history was taken and their hormonal values were measured. A pelvic ultrasound scan was performed to check for abnormalities the ovaries and uterus of 56 women with androgenetic alopecia. RESULTS: The number of men was 1.9 times more (520) than that of women (269). Most of them were in their twenties (male 223; 42.8%, female 85; 31.5%). In the 520 male patients, Norwood class IIIv was dominant (161 patients; 30.9%). In the 269 female patients, Ludwig class I was superior (218 patients; 81%). 395 (75.9%) of male patients and 198 (73.6%) of female patients had a family history of androgenetic alopecia. The most common associated disorder was seborrheic dermatitis (male 407; 78.2%, female 155; 57.6%). And others included atopic dermatitis, hypertension, thyroid disease, etc. Serum testosterone levels were increased in 92 (17.6%) of the male patients and in 36 (13.3%) of the female patients. Abnormal pelvic ultrasound findings were observed in 10 (18%) of 56 female patients, and the conditions were ovarian cysts (8.9%), Uterine myoma (5.4%), uterine mass (2%), endometrial mass (2%). CONCLUSION: Androgenetic alopecia is a disease that has genetic and familial tendency and is associated with the androgen level. The number of androgenetic alopecia patients was increasing and type IIIv was most common in the male patients. The pelvic ultrasound showed an increased rate of abnormal findings in the female patients with androgenetic alopecia, but ultrasound is not an appropriate routine test to evaluate.