Conversion hysteria and Mental disorder

Conversion hysteria noun - A mental disorder characterized by the conversion of mental conflict into somatic forms (into paralysis or anesthesia having no apparent cause).

Mental disorder and conversion hysteria are semantically related. In some cases you can use "Mental disorder" instead a noun phrase "Conversion hysteria".

Mental disorder noun - (psychiatry) a psychological disorder of thought or emotion; a more neutral term than mental illness.

Conversion hysteria and mental disorder are semantically related. Sometimes you can replace phrase "Conversion hysteria" with "Mental disorder", this phrases are similar.