Fungal infections are very rare among children but you can always prevent it from happening by following proper measures.
Dealing with rashes properly helps soothe a child.
It is rare that your child would get pimples or acne at this age. If it does happen, it is always advisable to consult your paediatrician.
Itching, if not treated at the right time can intensify and irritate a child. It is better to consult your paediatrician at the right time.