Dramatic changes in perception, thought, and mood occurs. While some users experience mild to intense euphoria, others feel threatened and because of fear, anxiety, or panic - can behave violently. The drug may also release hidden emotional or mental problems. Little is known about PCP's long-term effects , which appear after repeated use over a lengthy period. These are unpredictable, spontaneous recurrences of the original PCP trip without the user's having taken the drug again.
Flashbacks can occur weeks, months, or even up to a year after the last encounter with the drug.
Typically, they last only a few minutes, and are usually visual images ranging from formless colors to frightening hallucinations.