Topical Cetirizine Versus Topical Betamethasone in Treatment of Localized Alopecia Areata

Alopecia areata (AA) is one of the commonest autoimmune non-cicatricial hair loss that affects different parts of hair-bearing areas of the body . Nearly 2% of the population at some stage of their life may be affected by alopecia areata while the prevalence of alopecia areata was reported to be between 0.1% to 0.2%. Alopecia areata can occur at any age, although it starts in the first three decades of life in most patients, and both sexes are equally affected. It can present clinically as a well-defined patch of hair loss, diffuse hair loss, reticulate hair loss, ophiasis, ophiasis inversus, alopecia totalis (complete loss of scalp hair), or alopecia universalis (hair loss of all over the body).

Many treatment options including topical, systemic, injectable and laser modalities have been used for the treatment of AA . Among the various treatment options for alopecia areata, topical corticosteroids as betamethasone valerate are considered as standard therapy.

There have been reports on the efficacy/adjunctive role of systemic antihistamines in alopecia areata. Moreover, fexofenadine was found to enhance hair regrowth in two cases of extensive resistant alopecia areata.

Cetirizine hydrochloride belongs to a family of medicines called antihistamines which has varied medical uses and is commonly used to relieve allergy symptoms such as watery eyes, runny nose, sneezing, hives, and itching. In addition, it has been demonstrated that cetirizine inhibits release of prostaglandin D2 and stimulates the release of prostaglandin E2 .

Topical cetirizine was used with good results and with no notable side effects for the treatment of androgenic alopecia. Because of this evidence and the absence of hormonal influence, cetirizine was considered suitable for this kind of hair loss .