Viral rashes usually last around three or four days, but their duration is dependent upon several factors. First, the overall health of the person’s immune system plays a huge role in how long any rash or illness will last. If your immune system is strong, it will be able to fight off infection quickly. If you have a weaker immune system from a disease or recent illness, your immune system may take longer to get rid of the rash.
The maximum amount of time a body typically takes to get rid of any virus is about ten days. If the rash is still there after this much time, you should see a physician. They may need to prescribe antibiotics or an ointment, depending on what they believe is causing the rash. A doctor can often examine a rash’s pattern to find out what is causing it. Different rashes have different particular patterns.