However rashes which persist should be examined by a doctor especially if the skin is broken. Broken skin can trap bacteria and become infected. Babies who are teething often have a facial rash. If the rash is localized in one area it may be an allergic reaction to something your baby has come into contact with. Check to find out what may have caused it.
Mild rashes respond well to fresh air and a small amount of sunlight.
For the first six months of your baby's life they will be taking the majority of their nourishment from breastmilk and formula. After this time they may demand the introduction of solid foods which should still be supplemented with breastmilk or formula. The introduction of solid foods should always be with bland easy to swallow and digest foods. Such as baby rice, pureed fruits and vegetables. It will take time for your baby to learn how to swallow and move food to the back of their tongue.