Glossary Hallucinations - A perception of something (as a visual image or a sound) with no external cause usually arising from a disorder of the nervous system (as in delirium tremens or in functional psychosis without known neurological disease) or in response to drugs. Hydrophobia - Fear of water. Aerophobia - Abnormal or excessive fear of drafts or of fresh air. Paralysis - Loss of control and all electric activity within a muscle. Immunoglobulins - Defensive substances produced by the body against foreign harmful particles. Published on Sep 26, 2014Last Updated on Sep 22, 2018