My two year old son has broke out in an allergy. It looks like he has a pair of red underwear on. I took him to the doctor and he said its an allergy for sure and to let him run around commando for awhile until the rash goes away and then try to figure out what he is allergic to. The rash started to spread from his waist and down his legs. The rash was not as bad down his legs but still had little red bumps traveling down. I just put on a pair of underwear that was red but also spandex (the spandex was red) and his butt started to break out again...could he be allergic to red dye? or to spandex? I have never heard of this..
It is not due to external proteins as IH ave many patients who start reacting to milk proteins when we add animal milk as child need breastfeed for 2 years and when we add animal protein it is not compatible with human proteins causing allergies as thousands of child Chat Doctor.