Dictionary:

psychogenic

  (sī'kə-jĕn'ĭk)

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Originating in the mind or in mental or emotional processes; having a psychological rather than a physiological origin. Used of certain disorders.

Originating from the psyche, rather than the body. For example, an illness that has a psychological basis, rather than an organic basis. See also psychosomatic.

Having an emotional or psychological origin. Some diseases of animals are considered to have a psychogenic origin, e.g. esophagogastric ulcer of pigs, in spite of our limited knowledge of their psychological makeup.

• p. alopecia — anxiety and excessive grooming in cats can cause loss of hair from barbering and pulling. In a more severe form, injury to the skin occurs and eosinophilic plaques may appear.
• p. dermatitis — see acral lick dermatitis, idiopathic hyperesthesia syndrome, tail biting, tail sucking, flank sucking.
• p. vomition — in cats, may be caused by rapid, overeating as an attention-seeking or compulsive activity.

The adjective has one meaning:

Meaning #1: mental or emotional rather than physiological in origin