However, people who suffer from serious nightmares, especially patients with PTSD, this can be helpful. Nightmares and other dreams occur during those same stages of sleep.
Dravet Syndrome causes seizures and severe developmental delays. Dr. Sanjay Gupta, renowned chief medical correspondent for CNN, is treating a five years old girl, Charlotte Figi, who has Dravet’s Syndrome, with medical marijuana strain high in cannabidiol and low in THC.
Israel has made medical marijuana legal, and a lot of research into the medical uses of weed is done there, supported by the Israeli Government. 
17. Control other types of muscle spasms
Other types of muscle spasms respond to marijuana too.
In 2010, researchers at Harvard University suggested that another of the drug’s benefits may actually be reduced anxiety, which would improve the smoker’s mood and act as a sedative in low doses. 
Marijuana works to stop the negative neurological effects and muscle spasms caused by multiple sclerosis. A study published in the Canadian Medical Association suggests that marijuana may ease painful symptoms of multiple sclerosis.
In the writings, the focus was mainly on its power as a medication for rheumatism, gout, malaria, and funny enough, for absent-mindedness. The importance of medicinal value was focused mainly than the intoxication properties.
National Conference of State Legislatures: “State Medical Marijuana Laws.”
The cannabidiol Epidiolex was approved in 2018 for treating seizures associated with two rare and severe forms of epilepsy, Lennox-Gastaut syndrome and Dravet syndrome. In addition, the FDA has approved two man-made cannabinoid medicines — dronabinol (Marinol, Syndros) and nabilone (Cesamet) — to treat nausea and vomiting from chemotherapy. The cannabidiol Epidiolex was approved in 2018 for treating seizures associated with two rare and severe forms of epilepsy, Lennox-Gastaut syndrome and Dravet syndrome.
Limited research suggests cannabinoids might:
Which states allow medical marijuana?
States allowing legal recreational use include: Alaska, California, Colorado, Illinois, Maine, Massachusetts, Michigan, Nevada, Oregon, Vermont, and Washington
Side effects that have been reported include:
But it’s not yet proven to help many of these conditions, with a few exceptions, Bonn-Miller says.
Why hasn’t more research been done? One reason is that the U.S. Drug Enforcement Administration (DEA) considers marijuana a Schedule I drug, the same as heroin, LSD, and ecstasy, and likely to be abused and lacking in medical value. Because of that, researchers need a special license to study it, says Marcel Bonn-Miller, PhD, a substance abuse specialist at the University of Pennsylvania Perelman School of Medicine.
Cannabis also increases the risk of a relapse in people who already have schizophrenia, and it can make psychotic symptoms worse.
Regularly smoking cannabis with tobacco increases the risk of a baby being born small or premature.
Cannabis and mental health
If regular users stop taking cannabis, they may get withdrawal symptoms, such as feeling moody and irritable, feeling sick, difficulty sleeping, difficulty eating, sweating, shaking and diarrhoea.
If you need support with giving up cannabis:
Regular cannabis use increases the risk of developing a psychotic illness, such as schizophrenia.