A 38 year old man presents with nausea, vomiting and abdominal pain for 2 weeks. The nausea and vomiting were unresponsive to therapy with Metoclopramide, but the pain was relieved to an extent by hot showers

He had experienced several similar episodes in the past few months, all of which resolved spontaneously over 2 to 3 days. His medical, surgical and family histories are otherwise unremarkable.

He has used standard and synthetic K2 cannabinoids for the last 5 years, consuming between 5 to 10 rolls every day, including yesterday.

He denies using cocaine, heroin, or other 'hard' drugs, drinks only socially, and does not smoke.

A complete blood count reveals mild leukocytosis with a WBC count of 14,000/mm3, while a urinalysis is only significant for hyaline casts.

A urine drug screen is negative, while a capillary blood glucose level, ECG, and plain radiograph of the abdomen are also normal.