can u pls explain wat s anull tag with skin folds... wat s it n is it seroius issue??

A. Hi Siri please you can ask your paediatrician he can make u understand This properly because most of the times what I know is the dirt accumulates between the folds of the body and which is why sometimes it can turn into allergy or something but still to be more clear about it it will be better that you ask your doctor only