Evaluation of fractional carbon dioxide laser alone versus its combination with betamethasone valerate in treatment of alopecia areata, a clinical and dermoscopic study.

Alopecia areata (AA) is a non-scarring tissue-specific autoimmune disorder. Many therapeutic modalities are available for the treatment of AA, but none has yet proven to be uniformly effective. Fractional carbon dioxide (FRCO2) laser has been introduced as a treatment modality for AA. The objective is to evaluate and compare the efficacy and safety of FRCO2 laser in treatment of AA alone or in combination with betamethasone valerate cream. 30 patients were assigned to one of the following groups, Group A FRCO2, Group B FRCO2 plus betamethasone valerate cream or Group C (betamethasone valerate cream). Patients received eight laser sessions 2 weeks apart, treatment period was 4 months. A statistically significant decrease in SALT score, dystrophic hair and a statistically significant increase in terminal hair was observed in all groups. Patient satisfaction level and reduction in SALT score were significantly higher among FRCO2 and FRCO2 plus betamethasone valerate group. However, no statistical significant difference was found between FRCO2 group and FRCO2 combined with betamethasone valerate cream group. FRCO2 laser is a safe and effective treatment modality for AA when used alone or in combination with betamethasone valerate cream. However, it was found superior to betamethasone valerate cream monotherapy.