Healing dreams come when someone is sick in their health. These types of dreams are from the Ancient Greek culture where they a believed that dreams were given to people so that they could help to not live a life that would cause them to have certain health problems. They also believed that if you were grieving over something that it could cause you to be sick and these dreams would help you.
Healing dreams are called prodromic dreams and research has proven that people that have migraines and asthma will have strange dreams before they have an attack come on them. These dreams happen because your body has learned to communicate with your subconscious mind through dreams.
When you have a dream that tells you something about your physical body, chances are that you will either be dealing with something in your health that you are not aware of or you are about to have an attack on your body. These dreams can happen before you see any physical signs.
Dreams such as these will tell the dreamer that they need to seek some kind of medical help such as going to the doctor or the dentist. The dreams might be ignored by someone because they might not understand what it means but if you learn to interpret your dreams then they can act as a warning to you and help your body to heal.