DS has had a very very red and inflamed penis for probably the last 6 weeks.. It is ONLY his penis though, not his bum. He gets red and swollen and blistered on the tip.. I was so frightened he had an infection it looked so bad. I treated him with anti fungal and took him to the Dr who tested for UTI which was clear.. I started using disposables in the meantime and it cleared up. I've had him back in cloth since yesterday morning and this morning his penis is red raw again

Is it possible to develop a skin allergy of some sort? We have been using MCN's since he came home with no issues. I haven't changed nappies, or detergent or anything.. I don't want to keep using disposables but I can't him getting a blistered penis again. He would wake up screaming. Any suggestions?