Cannabinoid hyperemesis syndrome (CHS) is a rare condition that causes recurrent episodes of nausea, vomiting, and abdominal pain. It is thought to be caused by long-term use of cannabis. The symptoms of CHS typically come on gradually, and can be very severe. People with CHS may vomit up to 50 times a day, and may experience dehydration, weight loss, and electrolyte imbalance. They may also have a strong urge to take hot showers or baths, which can temporarily relieve their symptoms. There is no cure for CHS, but the symptoms can be relieved by stopping use of cannabis. In most cases, symptoms will resolve within a few days of stopping cannabis use. In some cases, people may need to be hospitalized to treat dehydration and electrolyte imbalance.