Have suffered pretty bad for as long as can rememeber, tried various things, stopping smoking, dariy free, gluten free, caffine free, citrus free, air purifiers, anti-mold paint, foam matresses etc, etc. No noticable difference.
Did a home blood test hoping for an answer, results were a barely noticable egg reaction. Have found it to be almost gone the last 12 months not sure why. Now eat anything but avoid mayonaise, have black coffee and try to eat onions? Crazy anicdotal but there you go. Stress may magnify but don’t believe is the cause. Am also convinced the ‘pure’ soaps are the worst.
There are two types of alergy reactions / tests, the blood ones and the skin pricks. Hands sounds more contact? You can walk in to Superdrug and get them done, results are dubvious though.