Doctors Warn NZ Cannabis Users About a Severe Side Effect That Could Lead to Hospitalisation

New Zealand doctors are raising concerns about a disturbing and increasingly common health issue linked to regular cannabis use — a condition so serious it is sending people to hospital.

The rise of “scromiting” among cannabis users

Medical professionals say long-term or heavy cannabis use can trigger Cannabinoid Hyperemesis Syndrome (CHS), a condition sometimes grimly referred to as “scromiting” — a combination of screaming and vomiting.

People suffering CHS experience repeated bouts of:

• Intense nausea

• Uncontrollable vomiting (sometimes several times an hour)

• Severe stomach pain

• Dehydration

Many patients describe the pain as worse than childbirth. The symptoms are so extreme that hospital treatment is often required.

A growing issue overseas — and a concern for NZ

Hospitals in the U.S. and other countries have reported a significant surge in CHS cases in recent years as cannabis becomes more widely used and stronger in potency. New Zealand specialists say similar patterns are emerging here, especially among young, frequent users.

While cannabis remains illegal for recreational use in NZ, surveys show regular use is still common, and synthetic or high-THC products may increase risks.

Health risks go well beyond vomiting

Doctors warn CHS is only one part of the story. Decades of medical research show that frequent use can also lead to:

• Respiratory and lung problems

• Cardiovascular issues, including increased heart strain

• Complications during surgeries

• Higher risks for people with chronic illnesses

• Neurological and mental-health effects

• Cannabis-use disorder or dependence

Some long-term studies have linked heavy cannabis use to increased rates of hospitalisation and, in rare cases, premature mortality.

Why doctors are speaking out now

With cannabis use becoming more socially accepted — especially among younger New Zealanders — doctors say there is a growing belief that it is harmless because it’s “natural.” But rising emergency admissions overseas suggest otherwise.

Medical experts warn that even moderate, long-term use can cause serious problems, and users should be aware of the early signs of CHS before the condition becomes dangerous.

What New Zealand users should look out for

If you use regularly, seek medical advice immediately if you experience:

• Persistent nausea

• Repeated vomiting

• Severe abdominal pain

• Sudden dehydration

Those with scheduled surgeries, heart conditions, asthma, or mental-health vulnerabilities should be particularly cautious, as cannabis use can worsen outcomes.

A reminder for New Zealanders

As debates over cannabis law continue and social attitudes shift, health authorities want people to understand that no drug is risk-free — including cannabis.

What may seem like a “safe high” can quickly escalate into a painful and serious health crisis.