Repeated vomiting and hot showers? Cannabis hyperemesis syndrome may be the cause. Learn the signs, the dangers, and how families can help a loved one.
By Matt Brown Your loved one has been to the emergency room again for violent vomiting. The doctors run tests, give fluids, and send them home without clear answers. At home, they spend hours in scalding hot showers because it's the only thing that brings relief. If they also use marijuana every day, the cause may be cannabis hyperemesis syndrome, a condition many families have never heard of. You are not imagining that something is wrong. This article explains what cannabis hyperemesis syndrome is, why it is becoming more common, why your loved one may refuse to believe marijuana is the cause, and what you can do to help. What Is Cannabis Hyperemesis Syndrome? Cannabis hyperemesis syndrome (CHS) is a condition caused by long-term, heavy marijuana use that leads to repeated episodes of severe nausea, vomiting, and stomach pain. "Hyperemesis" simply means extreme vomiting. The only reliable cure is stopping cannabis completely. CHS usually develops in people who have used marijuana daily or nearly daily for months or years. That surprises many families, because marijuana is often used to calm nausea. In heavy, long-term users, though, the drug can have the opposite effect on the body's systems that control nausea, digestion, and temperature. Doctors believe CHS is becoming more common as marijuana has become easier to buy and much stronger. Today's flower, vapes, and high-potency THC concentrates can carry far more THC, the chemical that produces the high, than the marijuana of past decades. Some people in crisis call the episodes "scromiting," a mix of screaming and vomiting, which tells you how painful they can be. What Are the Signs of Cannabis Hyperemesis Syndrome? The most telling signs of cannabis hyperemesis syndrome are cycles of intense vomiting in a daily marijuana user, along with a strong urge to take long, very hot showers or baths for relief. Episodes often come and go, with stretches of feeling fine in between. CHS typically moves through three phases. The Early (Prodromal) Phase This phase can last months or even years. Your loved one may have morning nausea, a fear of vomiting, and stomach discomfort. Many people respond by using more marijuana, believing it helps, which can quietly make the condition worse. The Vomiting (Hyperemetic) Phase This is when families usually notice something is seriously wrong. Watch for: Repeated, intense vomiting, sometimes many times an hour Severe abdominal pain Long or frequent hot showers or baths, sometimes for hours Dehydration, weight loss, and refusing to eat or drink Multiple ER visits with no clear diagnosis The Recovery Phase When cannabis use stops, symptoms gradually ease. Appetite returns and eating becomes normal again. Recovery can take days, weeks, or sometimes longer, and symptoms commonly return if marijuana use starts again. Is Cannabis Hyperemesis Syndrome Dangerous? Yes. Cannabis hyperemesis syndrome can become a medical emergency. Prolonged vomiting can cause severe dehydration, dangerous drops in potassium and other electrolytes, and kidney damage. In rare cases, complications have been fatal. Repeated vomiting can also tear the lining of the esophagus. Very hot showers carry their own risk of burns, especially when someone is weak or exhausted. Seek emergency care right away if your loved one cannot keep fluids down, seems confused or faint, has blood in their vomit, or is producing very little urine. In the ER, standard anti-nausea medications often don't work well for CHS. Doctors may use other medications, IV fluids, or a capsaicin cream on the stomach, but these only manage the episode. They don't cure it. Why Won't My Loved One Believe Marijuana Is the Problem? Denial is extremely common with cannabis hyperemesis syndrome because marijuana is widely seen as harmless and even as a treatment for nausea. Your loved one may truly believe weed is the only thing keeping them functional. Hearing that it's making them sick can feel impossible to accept. There are other reasons, too. Episodes come and go, so they may tell themselves the last one was food poisoning or a stomach bug. Stopping can also bring irritability, poor sleep, anxiety, and low appetite, so cutting back feels worse at first. And if they have used cannabis to cope with stress, anxiety, or trauma, giving it up can feel like losing their only coping tool. Many people with CHS keep using despite being hospitalized again and again. That pattern, continuing to use despite clear harm, is one of the core signs of cannabis use disorder. It is an addiction, not a lack of willpower, and it deserves real treatment. Learn more in our guide to marijuana addiction . How Can Families Help Someone With Cannabis Hyperemesis Syndrome? The most helpful thing families can do is connect the dots calmly, keep the focus on health rather than blame, and guide their loved one toward professional help. You can't force someone to quit, but you can make it harder for them to ignore the connection. Learn the facts first. Knowing what CHS is helps you speak with confidence instead of fear. Pick a calm moment. Talk when your loved one is sober and not in the middle of an episode. Share what you've seen. Use specifics: "You've been to the ER three times since summer, and each time you'd been smoking every day." Encourage an honest talk with a doctor. Ask them to tell their provider exactly how much and how often they use. CHS is often missed when doctors don't know. Stop funding the cycle. Avoid giving money that is likely to be spent on marijuana, and don't cover for missed work or obligations. Get support for yourself. Watching someone suffer repeatedly is exhausting. Family counseling or support groups can help you stay steady. Bring in professional help if they refuse. When conversations go nowhere, a professional intervention can help your family speak with one clear, loving voice. There Is Real Hope for Recovery Cannabis hyperemesis syndrome is frightening, but it is also one of the few medical conditions with a clear answer: when marijuana use stops, the symptoms typically go away. Many people who once spent nights on the bathroom floor go on to feel healthier than they have in years. Your loved one doesn't have to hit a deeper bottom before things change. With the right support, your family can help them see the connection and take the first step toward healing. Frequently Asked Questions About Cannabis Hyperemesis Syndrome How long does cannabis hyperemesis syndrome last? An acute vomiting episode often lasts one to two days, though it can stretch longer. After someone stops using marijuana completely, symptoms usually improve within days to weeks, and full recovery may take longer. Symptoms often return if cannabis use resumes. Can you get cannabis hyperemesis syndrome from vaping or edibles? Yes. CHS is linked to THC, not just smoking. Heavy, regular use of vapes, concentrates, or edibles can lead to the condition, and high-potency products may raise the risk. Why do hot showers help cannabis hyperemesis syndrome? Experts aren't completely sure, but heat appears to temporarily calm the nausea signals the brain receives. The relief only lasts while the person is in the hot water, which is why some people shower for hours. It manages symptoms but does not treat the cause. Can you cut back on marijuana instead of quitting? For most people, cutting back is not enough. The only proven way to stop CHS episodes is to stop using cannabis completely. Returning to marijuana, even occasionally, often brings the symptoms back. Is cannabis hyperemesis syndrome a sign of addiction? Not always, but continuing to use marijuana after repeated vomiting episodes and ER visits is a strong sign of cannabis use disorder. If your loved one can't stop despite clear harm to their health, professional treatment can help. Get Help for Your Family Today If your loved one keeps getting sick but won't stop using marijuana, you don't have to figure this out alone. Call Freedom Interventions today at 458-298-8000 to talk with Matt Brown about how a professional intervention can help your family break the cycle and move toward lasting recovery.
