Small pimples or rashes in neck folds are common, often caused by heat or moisture buildup. A consistent routine of cleaning the area gently after every feed and keeping it dry is the first step. If the area is prone to dryness or irritation, applying a thin layer of coconut oil or a pediatrician-recommended baby lotion can help soothe the skin. If rashes are red, itchy, or persistent, consult your pediatrician to rule out eczema or fungal infections, as they may recommend specific barrier creams.