I've had it for years. Then I was diagnosed with Type 2 Diabetes. I tried changing my diet to suit the diabetes - low carbs, whole wheats, leafy greens - and my IBS flared up so badly. It was bad before I started taking my metformin/glucofage but it got increasingly worse when I changed my diet for the diabetes.
Newborns are also coated with a thick, pasty, white material called vernix caseosa (made up of the fetus' shed skin cells and skin gland secretions), most of which will be washed off during the baby's first bath.
1 No treatment is needed, just time. They can last for weeks or even months on a baby's skin.  Erythema toxicum is another common newborn rash. It looks like red blotches with ill-defined borders that are slightly raised, and may have a small white or yellow dot in the center.