<unk> , also known as<unk>  syndrome, is a mental and behavioral disorder defined as a state of abnormally elevated arousal, affect, and energy level, or "a state of heightened overall activation with enhanced affective expression together with lability of affect." During a<unk>  episode, an individual will experience rapidly changing emotions and moods, highly influenced by surrounding stimuli. Although<unk>  is often conceived as a "mirror image" to depression, the heightened mood can be either euphoric or dysphoric. As the<unk>  intensifies, irritability can be more pronounced and result in anxiety or anger. The symptoms of<unk>  include elevated mood (either euphoric or irritable), flight of ideas and pressure of speech, increased energy, decreased need and desire for sleep, and hyperactivity. They are most plainly evident in fully developed hypomanic states. However, in full-blown<unk> , they undergo progressively severe exacerbations and become more and more obscured by other signs and symptoms, such as delusions and fragmentation of behavior.
Mania
Antidepressant discontinuation syndrome  Antidepressant discontinuation syndrome  1
Dyssomnia
Orthosomnia
Anotia
Ergotism
Parasomnia
Insomnia