When I started I was told to be very careful at first as it can make you extremely photosensitive but actually it's not been a problem at all, in fact I try to get to the beach every weekend and although I went a bit pink on the shoulders the 1st week after that I seem to be tanning even less than other years so it really is a case of caution at first and see what happens, just like everything else about this condition we all seem to be different. Having said that, I imagine sunbeds are a lot stronger than normal sun even here where it's too bloomin' hot at the moment so I'd check with derm or dermie nurse or someone just to be on the safe side, you've got enough on your plate as it is, hardly need to go damaging your skin any more.