Rashes on my upper lip

I don’t know the English name but I have these rashes on my upper lip. It is called ‘Isinu’ in Yoruba. It is very painful and has made my lip bigger than before. What causes it and what can I do to treat it?

Oriade (by SMS)

What you have is a virus infection called Herpes Zorster. It usually happens when your immune system is depressed or you have been run down physically. Since it is a virus infection, it will run its course. All you will need is to see your doctor for some medicines that will relieve the pain as well as some cream or skin paint for the rashes. Some Vitamin tablets that will help to boost your resistance will also be helpful. In severe cases or when the rashes are recurring too frequently, your doctor may order some blood tests to rule out other underlying ailments.