Itching affecting my life. Of red skin.

Hello, I have been suffering through itching problem for 2 years. Till now I just kept ignoring it. It is like attack of itching which lasts for 10-15 min or even upto 30 min depending upon severity. Whenever I remove cloth it starts itching on that part of body, itching is like piercing many needles, whenever I take bath and come out it starts itching, whenever I do any exertion let it be for second or for minutes it starts itching. That itching will not go if I do not immediately cover affected part with cloth. This is affecting my life like anything. I am just done tolerating it and can not live life with it anymore. I want relief from this. Whenever I scratch affected part it becomes red patch or lines appear for sometime and it disappears automatically. This itching is on lower chest, shoulders, hands, thighs, back portion of body above waist mostly. itching may or may not have red skin. I have uploaded photos of red skin.