What does it mean to dream of maggots coming out of your head?

Dreams communicate through symbols, and they are often overly dramatic. Although the idea of maggots coming out of your head is horrible, those maggots are a symbol for something much less repulsive. The way to figure out your dream is to figure out what maggots represent: maggots are disgusting because they hatch from eggs laid by flies on rotten meat. In the dream, the maggots represent something coming out of your head: thoughts or ideas. So the message of the dream is that there are rotten ideas coming from your head. What have you been thinking about lately? What has influenced your recent thoughts? What is "rotten" about your reasoning? This is the type of question you need to ask yourself in order to understand your dream.

Another answer:

It seems dreaming of maggots represents fear of death or illness so perhaps you are afraid of a mental illness or tumor or something involving your head.