Itchy feeling and scrathes

Patient: Dear doctor,its been some days that my hamd specially fore arms and chest when ever i feel an itchy i scratch it and then it gets red and bups up..and it looks like in big long line..n sometimes if someone preses my han hard or if i take a weig item ad my hand gets that weight in.that area will start to bump up wit reddish effect as if some sort of worm infected me..kindly let me know what is it..is it allergu of any kind?

Symptoms: Bumps and scratches ,ithy feeling

Doctor: