Shingles is a disease caused by the varicella zoster virus, because the virus can invade two tissues, one for the skin and then the nerves, it can destroy the nerves and cause nerve inflammation or changes in nerve function, and because it affects the nerves, it can feel pain, usually very intense pain. For pain, doctors usually score it from 0-10, 10 being the most painful score experienced in this life, for example, a woman may give birth to a child with a score of 10. Generally, the pain of shingles can be up to 5, which can affect the patient’s sleep and make it painful to sleep, so it is scored at least 5 or more for moderate to severe pain.