The terms retinal migraine and ocular migraine are often confused with visual migraine, which is a far-more-common symptom of vision loss, resulting from the aura phase of the common migraine. The aura phase of migraine can occur with or without a headache.
Wiktionary(0.00 / 0 votes)Rate this definition: 1  mentalism(Noun) The doctrine that physical reality exists only because of the mind's awareness. 2  mentalism(Noun) Activities such as mind reading, especially when used by performers.
Existentialism is a philosophical belief which focuses on existence. On freedom and choice. It states that existence precedes essence. Man exists and in the process man defines himself and the world in his own thoughts, and wanders between choice, freedom, and existential angst.