Red Blotches on Back, Chest and arms that are catchable

My husband had a job doing body disposal which included a lot of chemicals but they wear suits to keep their bodies safe from those chemicals. he doesn't do that job anymore but ever since then he started getting red blotches on his skin on his back. He went to a doctor and he was told it was probably a fungus causing it and to shower with Head and Shoulders shampoo. That does help the redness but they are still there and spreading to his chest and arms. It has been years now and they are still spreading. He was also told they wouldn't transfer to another person but i started getting small ones on my chest. I put Tinactin on the ones I got and they seem to go away after a day or two. They don't hurt, itch, raise up or anything. They are just red blotches that spread and apparently I can get them from skin contact! We went to another doctor and he said it's probably just dry skin but lotion doesn't help. Is there any ideas of what this might be? And if it was caused by some kind of chemical exposure from his past job of body disposal, is there something we can do about this because the doctors don't seem to know what it is. They seem to start off as smaller than a dime size circle but eventually get bigger, less circular and run together in bunches. Please Help!

[jagesh50]

More like a textile dermatitis.Ask him to use cotton uncoloured clothing for sometimes.May have nothing to do with chemical exposure.