Table 2.
Characteristics of the remaining four study subjects and the case of psychogenic vomiting described in 1996 by de Moore and colleagues (Mr G*)4
| Mr J | Miss K | Mr L | Mr E | Mr G* | |
| Cannabis use age of onset (y) | 17 | 12 | 14 | 18 | 14 |
| Cyclical vomiting (y) | 44 | 14 | 17 | 32 | 20 |
| Illness duration (y) | 4 | 3 | 6mths | 6 | 3 |
| Cannabis cessation | Well for 2y | Well for 1y | Well for 2y | Did not cease | Did not cease |
| Cannabis resumption | Nil | Vomiting at 2mths | Nil | Ongoing illness | Ongoing illness |
| Compulsive bathing | Multiple hot showers | Multiple hot baths | Absent | Multiple hot showers | Multiple hot showers |
| Prodromal illness | No | No | Yes (6mths) | No | Yes |
| Cannabis dose (daily dose) | Heavy (5–10 cones) | Moderate (3–4 cones) | Heavy (5–10 cones) | Heavy (5–10 cones) | Heavy (5–10 cones) |
| Noted dose response (increased cannabis use) | Yes (increased for back pain) | – | – | Yes (increased for anxiety) | Yes (increased for anxiety) |
| Hospital admissions | Nil | Multiple | Nil | Multiple | Multiple |
| IVI fluids | Nil | Required | Nil | Required | Required |
| Cyclical presentation (months) | 4–6 | 2–3 | 3 | 3–4 | 6–12 |
| Pyrexia (noted in ward notes) | – | Not noted | – | Not noted | – |
| Thirst | ++ | ++ | + | ++ | – |
| Weight loss (kg) (during illness) | Nil | 10 | Nil | 10 | 7 |
| Weight gain (kg) (on cessation) | 10 (at 6mths) | 10 (at 3mths) | Nil | – | – |
| Other illicit drugs used | None | None | None | None | None |
| Alcohol abuse | None | None | None | None | None |
| Medications | Nil | PPI | Nil | PPI | – |
| PmHx hyperemesis gravidarum | – | Severe | – | – | – |
| Psychiatric Dx | None | None | None | None | ?Anxiety |
PPI, proton pump inhibitors; PmHx, past medical history.