Diaper rash is a common form of inflamed skin (dermatitis) that appears as a patchwork of bright red skin on your baby’s bottom.
Diaper dermatitis is caused by overhydration of the skin, maceration, prolonged contact with urine and feces, retained diaper soaps, and topical preparations and is a prototypical example of irritant contact dermatitis.
Signs and symptoms are restricted in most individuals to the area covered by diapers.
Diaper rash is often related to wet or infrequently changed diapers, skin sensitivity, and chafing. It usually affects babies, though anyone who wears a diaper regularly can develop the condition.
Diaper rash can alarm parents and annoy babies.
Air drying, more frequent diaper changes will help. Consult a MD dermatologist doctor if rash persist.
Read more:
http://www.mayoclinic.org/diseases-conditions/diaper-rash/basics/definition/con-20019220
http://emedicine.medscape.com/article/911985-overview
https://www.ncbi.nlm.nih.gov/pubmed/14510084