Directly related to "mania":
* Mania: A state of intense excitement or enthusiasm, often accompanied by irrational behavior.
* Maniac: A person exhibiting extreme enthusiasm or excitement, often to the point of irrationality.
* Maniacal: Characterized by excessive enthusiasm or excitement, often to the point of madness.
Words with "mania" as a root:
* Kleptomania: A recurrent urge to steal, typically without a need for the stolen items.
* Pyromania: An impulse control disorder characterized by an irresistible urge to start fires.
* Megalomania: A delusion of grandeur, or a belief in one's own power, importance, or identity.
* Nymphomania: An excessive and uncontrollable sexual desire in women. (This term is outdated and considered offensive.)
* Dipsomania: An uncontrollable craving for alcoholic beverages.
* Logomania: An obsessive desire to talk or write excessively.
* Bibliomania: An obsessive desire to collect books.
* Claustrophobia: A fear of enclosed spaces. (Note: While the root "phob" means fear, not madness, this term is included as it relates to a strong irrational fear.)
Related words that don't contain "mania" but share the meaning of madness:
* Insanity: A state of being mentally deranged or disordered.
* Delusion: A false belief that is firmly held despite evidence to the contrary.
* Hallucination: A sensory perception that occurs in the absence of an external stimulus.
* Psychosis: A mental disorder characterized by a break from reality.
Remember that some of these words carry negative connotations and should be used with caution.