Samhainophobia is "a persistent, abnormal, and unwarranted fear of halloween". People with Samhainophobia may also suffer from other phobias such as ailurophobia, wiccaphobia,phasmophobia,arachnophobia, nyctophobia, and coimetrophobia.

Like all fears and phobias, samhainophobia is created by the unconscious mind as a protective mechanism. In some cases the acctual cause may be unknown.But In other cases it may due to some trama in ones past. Wether the trama is from the holiday,or an event that happend during the holiday.