19 yr old, with this skin condition, self inflicted 'signature '. What us the dd and rx?

34 years male......recurrent lesions with itching.......Diagnosis and treatment please.

13 years male has itching in fingers and hand and other parts of body . If he rubs swelling will occurs .please rx and dx

13 year child having this type of skin lesions all over her body for the last 4 years which is associated with mild itching. She also had childhood bronchial asthma 5 years ago but no complaints now. Presently she is on fortnightly inj. Histaglob n itraconazole + Terbinafine .Pls suggest diagnosis n treatment

A 35 year old lady presented with recurrent itchy wheals and red lines for one year. There was no obvious precipitating factor for the skin rash. She enjoyed good general health and there was no family history for skin diseases. A test was done on the back (figure). what is the clinical diagnosis? what feature is seen in the photo?