Combined Microneedling With Either 1% Lactic Acid Solution or Vitamin D3 or Triamcinolone Acetonide in The Treatment of Alopecia Areata

patients will be treated with MN combined with lactic acid solution 1%. Lactic acid solution 88% concentration PH (6.84), diluted with distilled water to have a final concentration of 1%

patients will be treated with MN combined with topical application of vitamin D3 (an aqueous preparation of cholecalciferol (2.5 mg/ ml), The maximum total amount of vitamin D3 injected into a patient in every session will be 2.5 mg (1 ml)

patients will be treated with MN combined with triamcinolone acetonide injectable suspension (Epirelefan®, 40mg/ ml, Eipico, Egypt) (10 mg/ml) will be used in a dose of 0.1 ml/cm2 area

patients will be treated with MN combined with normal saline 0.9%