What it is: A red, itchy rash that typically appears where skin flexes — inside the elbows, behind the knees, and the front of the neck — but also shows up on the face and upper body. It is more common in families with a history of allergies, asthma, or eczema.
How to treat it: For infants, it's important to use a low-dose hydrocortisone cream. If the condition continues as your child grows, an oral antihistamine may provide more relief. To keep outbreaks to a minimum, use mild bath products and moisturize your baby's skin.