Hallucinations are often frightening and are caused by mental and general medical illnesses. What are those illnesses? Are hallucinations ever normal?

This challenge encourages young people to take large amounts of Benadryl (diphenhydramine) in order to cause hallucinations.

The rare infection called Primary Amoebic Meningoencephalitis is caused by Naegleria fowleri, which is a microscopic organism ...

Hallucinations are unreal sensory experiences, such as hearing or seeing something that is not there. Any of our five senses (vision, hearing, taste, smell, touch) can be involved. Most often, when we ...