RESUMEN
BACKGROUND/PURPOSE: Acne vulgaris is a very prevalent skin disorder and remains a main problem in practice. Recently, phototherapy with various light spectrums for acne has been used. There are some evidences that low-level laser therapy (LLLT) has beneficial effect in the treatment of acne lesions. In this study, two different wavelengths of LLLT (630 and 890 nm) were evaluated in treatment of acne vulgaris. MATERIALS AND METHODS: This study was a single-blind randomized clinical trial. Patients with mild to moderate acne vulgaris and age above 18 years and included were treated with red LLLT (630 nm) and infrared LLLT (890 nm) on the right and left sides of the face respectively, twice in a week for 12 sessions, and clinically assessed at baseline and weeks 2, 4, 6, and 8. RESULTS: Twenty-eight patients were participated in this study. Ten weeks after treatment acne lesion were significantly decreased in the side treated by 630 nm LLLT (27.7±12.7 to 6.3±1.9) (P<0.001), but this decrease was not significant in the site treated by 890 nm LLLT (26.9±12.4 to 22.2±8.5) (P>0.05). CONCLUSION: Red wavelength is safe and effective to be used to treat acne vulgaris by LLLT compared to infrared wavelength.
RESUMEN
BACKGROUND: Hirsutism is a common clinical condition with different etiologies. Many of these patients have frank or subclinical abnormalities in the adrenal and ovarian steroidogenesis. The disease may be associated with other clinical signs of hyperandrogenism. The objective of this study was to investigate the clinical features of hirsutism and its etiologic factors in premenopausal Iranian women. METHODS: In a cross-sectional study, 790 consecutive premenopausal women referred to the dermatology Clinics of Hazrat-e Rasool and Firoozgar University Hospitals and three private dermatology clinics during 2001 - 2003 with the clinical diagnosis of hirsutism were studied. All patients underwent detailed clinical assessment and transabdominal ultrasonography of the ovaries. Endocrinologic work-up was performed for 285 patients. RESULTS: Hirsutism was mild in 65%, moderate in 32.5%, and severe in 2.5% of the patients. Positive family history was found in 56.2%. Hormonal studies revealed some abnormalities in 35.2% of the patients. Coexisting medical conditions included acne in 70% of the patients, menstrual irregularity in 38.6%, androgenic alopecia in 21.3%, obesity in 6.5%, acanthosis nigricans in 4.9%, and diabetes in 0.6% of the patients. Etiology of hirsutism was identified as polycystic ovary syndrome (62.53%), idiopathic (35.19%), congenital adrenal hyperplasia (0.38%), prolactinoma (0.13%), and undetermined (1.77%). Polycystic ovary syndrome was diagnosed more frequently in women with menstrual irregularity than eumenorrheic patients (97.70% vs. 40.41%, P < 0.001). CONCLUSIONS: Hirsute patients frequently have either elevated androgen levels or clinical conditions associated with hyperandrogenemia. Eumenorrhea does not rule out endocrine abnormality and particularly polycystic ovary syndrome which is a common cause of hirsutism. We recommend performing endocrinologic work up, investigation of coexisting hyperandrogenic states, and evaluation of polycystic ovary syndrome in all patients with hirsutism.
