my baby is 3 months old.what is this white on his anal areal pls help..

A. A group of fungi called Candida normally live in the skin and diaper area. When they grow in excess, it can cause a painful diaper rash called Candidiasis, or a yeast infection. The rash may look red and inflamed, or it may include white fluid filled blisters or swollen spots with a white scaly, outer layer. Please consult a doctor for proper diagnosis and treatment.