Talk to Dermatologist on Itchy Skin

I have some sort of itch. All over my back, face, shoulders, tummy, chest, scalp and arms and occasionally on my thighs and legs. When I itch tou wahan red lines ban jati hain. Like jaha bhe meray nails ya fingers scratch kertay hain skin red ho jati. Swell ho jati aur heat feel hoti It goes away in an hour or two. Ya water use keron to pat down the flared up area tou it gets better. I have acne on my back, shoulders, upper arms and chest. Chest nd face are only affected a little bit. I donot have dry skin. But ever since i developed this condition i can see dryness on my skin on upclose inspection. I tried anti allergy medicine RIJEX for 2 weeks. And everyday when I took medicine it felt better. And i didn't feel the need to scartch my skin. I also tried homeopathic medicine but it was also temporarily effective. Took showers with disinfectant added to the water. Applied body lotions. I haven't changed my soap, shampoo or detergent or anything . I take showers daily. Nothing