Phencyclidine Dependence

1. Phencyclidine abuse: A destructive pattern of phencyclidine use, leading to significant social, occupational, or medical impairment.
2. Must have three (or more) of the following, occurring when the phencyclidine use was at its worst:
   
   1. Phencyclidine tolerance:
      Either need for markedly increased amounts of phencyclidine to achieve intoxication, or markedly diminished effect with continued use of the same amount of phencyclidine.
   2. Greater use of phencyclidine than intended:
      Phencyclidine was often taken in larger amounts or over a longer period than was intended
   3. Unsuccessful efforts to cut down or control phencyclidine use:
      Persistent desire or unsuccessful efforts to cut down or control phencyclidine use
   4. Great deal of time spent in using phencyclidine, or recovering from hangovers
   5. Phencyclidine caused reduction in social, occupational or recreational activities:
      Important social, occupational, or recreational activities given up or reduced because of phencyclidine use.
   6. Continued using phencyclidine despite knowing it caused significant problems:

      Continued phencyclidine use is continued despite knowledge of having a persistent or recurrent physical or psychological problem that is likely to have been worsened by phencyclidine

• Learning Problem
• Dysarthria or Involuntary Movement
• Hypoactivity
• Psychosis
• Euphoric Mood
• Depressed Mood
• Somatic or Sexual Dysfunction
• Hyperactivity
• Addiction
• Sexually Deviant Behavior
• Odd or Eccentric or Suspicious Personality
• Dramatic or Erratic or Antisocial Personality

Some disorders display similar or sometimes even the same symptom. The clinician, therefore, in his/her diagnostic attempt has to differentiate against the following disorders which he/she needs to rule out to establish a precise diagnosis.

• Nonpathologic phencyclidine use for recreational purposes;
• Repeated episodes of Phencyclidine Intoxication.