I didn't rush into citrus - I was worried that the acid would create interesting explosions in her nappy. But by about 10 months she was enjoying satsuma segments and I never peeled them. Maybe start with some of the summer berries that are around at the moment instead.
Whats the problen with strawberries??? My DS has treid them (6.5 months) and seemed to enjoy and i didn't notice any side effects... hope i haven't caused any harm? he has also had satsuma although i did bite the skin off for him as 1st time when i didn't he ended up chewing it for ages (noticed he still had it in his mouth hours later... chubby hamster cheeks...) he loves cherries (obviously with stone taken out)
Its fairly common for babies to react to strawberries. DD loves them, had a slight rash from them once (prob about the 3rd time she ate them) but has been fine since. If you've not noticed any problems with DS then nothing to worry about.