Can paranoid schizophrenia be cured or controlled without the use of medication?

Schizophrenia can be controlled and cured without the use of medication.

Make sure that the patient is not using any recreational drugs or alcohol as this raises dopamine in the brain, high levels of dopamine are directly responsible for hallucinations and distorted perceptions.

I would however recommend that you stabilize the condition with anti-psychotics (preferably Seroquel or Risperdal)

Risperdal has anti-depressant qualities and Seroquel is powerful anti-anxiety and a good sedative. The sedating effects however do wear off over time.

Once the condition is stable the person can gradually reduce their medication until they are no longer taking anti-psychotics. Although this method is not recommended by Psychiatrists. It has worked for me, as I too suffered from schizophrenia.

It is very important that any person with schizophrenia gets enough sleep as lack of sleep aggravates the condition.

I would say that a person who develops a psychosis from cannabis is not suffering from schizophrenia rather a drug induced psychosis and as such can control that by staying away from the drugs where as someone who develops schizophrenia without marijuana may have difficulties and may need to take medication for ever

However the active component in marijuana contains THC which is known to worsen psychotic symptoms namely paranoia in schizophrenics. John Nash, the mathematician whom a movie was made called a Beautiful Mind regained his grip on sanity without the use of medications, after a very long time of psychosis. Studies indicate that first episode treatment can greatly improve recovery from schizophrenia and untreated schizophrenia can make things worse.

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Schizophrenia can be treated, but it can never fully be cured after the second stage of its onset.