Mental Illness

A list of unusual or notable mental illnesses in Pro species or worlds. (A mental illness is loosely defined as significantly unusual neurophysiological setup or behaviour which must either cause distress or impair the sufferer's ability to function in the society in which it lives.)

• Innocence? - severe impairment in judgment; unworldliness. Classified as a developmental disorder when found in children. Adult onset (rare, never spontaneous) often goes hand in hand with childish or regressive behaviour.
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Traveller note: Many species consider diseases of this type to be no laughing matter and may be offended by jokes about them. They may also attach much stigma or consider mental illnesses taboo.