6ft, 280lbs, male

My skin has been super sensitive for about a year now. I feel like especially to touch I cannot use the same things I’ve been able to use in the past without experiencing itching and burning in my hands. For example I am not allergic to plastics but every plastic phone case I use cause my hands to burn and my body to itch. Same thing happens with phones cases made from other materials (silicone, fabric, wood, etc.) they all cause my skin to burn and itch. It’s extremely frustrating because I’m having trouble just using a phone nowadays. How do I even go at solving this problem? I know I sound crazy but it makes life extremely uncomfortable.