Sensory Processing Disorder

Sensory Processing Disorder (SPD): Causes & Symptoms

Sensory processing disorder occurs when the brain cannot receive and process sensory input. There is no official medical diagnosis for sensory integration dysfunction, which was formerly called sensory integration disorder. Those with sensory processing disorders tend to be overly sensitive to their surroundings. They may experience pain or overwhelm at the sound of common sounds. They…

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Hallucinogen Persisting Perception Disorder

Hallucinogen Persisting Perception Disorder (HPPD)

Hallucinogen persisting perception disorder (HPPD) is a chronic condition in which a person has seemingly persistent visual hallucinations following a previous hallucinogenic drug experience, without the same intoxication or altered state of consciousness that is associated with the drug.  Several weeks, months, and even years after using hallucinogenic drugs such as MDMA (ecstasy) and psilocybin…

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