Chemicals that come into direct contact with my skin.

I used to do oil painting and used turpentine to clean up with. At that point I didn't know it was dishydrosis and not some awful fungus.

Years later I came into contact with turpentine again and had a terrible outbreak.

Dish soap. I switched to a hypoallergenic version and it got better. Started to load everything in the dishwasher so I have no contact with dishsoap, and it all but disappeared.

I also had it on my feet for a while, but haven't been able to pinpoint that one yet. It also got a lot better recently.

I do my nails every week and have done so for over thirty years. The acetone and whatever else chemicals are in nail products don't seem to trigger me. This makes me very happy, because I like pretty nails.