MRCP2-0718

A 32-year-old office worker has been brought to the Emergency Medical Unit with severe diarrhoea and vomiting. She reported feeling unwell for the past two days after eating sushi from a local restaurant. Despite receiving an antiemetic injection from the paramedics, she is now experiencing involuntary spasms of her neck and face, with her eyes rolling upwards.

Upon examination, the patient appears distressed and her blood pressure is 140/80 mmHg with a pulse of 90 bpm. She is exhibiting a right-sided torticollis and her jaw is held in spasm.

What is the most appropriate course of treatment to alleviate the patient’s symptoms?