A baby with diaper rash will not be shy about letting his or her parents know that they have a situation on their hands. This, along with the readily decipherable signs of the problem, does mean that it can be treated at an early stage, and hence treated effectively and decisively. Treating diaper rash is not something that takes too long, and the results tend to be swift. Of course it could be almost instantaneous and any parent would still feel that it was an eternity, but it needs to be said that a parent who has a child with diaper rash is not a bad parent at all, just unlucky.
In cases of diaper rash, it is important to change your baby even more regularly than you currently do. It is something inside the diaper that has caused it, and this same thing will either aggravate it or retard its eradication if left unchecked. Keeping your baby clean and dry will prevent the conditions in which diaper rash thrives. If your child has scope to play outside or on a surface that wipes clean, you may even leave their diaper off for a time, as the flow of air around the area will speed the healing. If you use disposable diapers, using a different brand free from fragrance and additives may also help, especially if the rash is a symptom of an allergy.
After three days the diaper rash should be more or less gone. If it still persists, then a cream for treating fungal infections will be well employed.