In words that high school students can understand, what is Hallucinogen Persisting Perception Disorder ?

i don't understand all the big words they use.

what happens when you get the flashbacks? is it scary?

it is basically a disorder that is caused by someone who has taken hallucinoge drugs and has like flashbacks and sees things like visions and such when the flashback. There is no cure for it cause the hallucinogens stay in your system and dont go away so it can happen anytime anywhere...

HPPD occurs in people who have previously taken hallucinogenic drugs, usually on a number of occasions. After the drug-related mind alteration has finished they may experience visual symptoms similar to the original hallucinogenic experience. The term flashback, although used synonymously by some, is in fact a discrete but ill-defined phenomenon. The term has been used over the years in the literature, and hence is felt to be useless as a defining condition. Flashbacks describe a short-term transient, episodic, non-disturbing, reversible and benign re-experiencing of visual symptoms originally encountered during a drug experience.

HPPD, by contrast, is a persistent, pervasive, long-term, dysphoric and distressing condition. It may be irreversible or persist for months or years. Its effects are clearly non-benign and accompanied by a sense of anxiety and depression. The symptoms must cause distress or social, occupational or other impairment and not be due to an underlying medical condition. Equally, the symptoms should not be due to another mental disorder such as dementia, delirium or schizophrenia, and not be associated with waking or falling to sleep when hypnopompic or hypnagogic hallucinations are a more likely cause.

Hope this helps

Reexperiencing the symptoms of hallucinogen taking without actual taking any of these substances. The disturbance causes marked distress. Complications of this disorder include suicidal behavior, Major Depression, and Panic Disorder.

Basically it's flash backs from doing hallucinogenic drugs too much in the past.

Is it scary?

That would depend on what your definition of scary is. Everyones perception is different.

its a desease