A 37-Year-Old Man Is Taken to the Hospital with Pneumonia

A 37-year-old man is taken to the hospital with pneumonia of the right lower lobe. He is given antibiotics, and by the second hospital day, his shortness of breath and fever had improved. He is now experiencing new-onset stomach discomfort, diarrhea, and severe muscle pains. The patient has no history of gastrointestinal problems or previous surgery, although she does admit to using recreational drugs. The temperature is 36.8 degrees Celsius (98.2 degrees Fahrenheit) , the blood pressure is 124/80 mm Hg, and the pulse rate is 88 beats per minute. The patient seems uneasy and nervous upon inspection. Pupils are dilated, and lacrimation is noticeable. An abdominal examination indicates hyperactive bowel noises in the absence of discomfort or distension. Which of the following diagnoses is more likely?

A) Alcohol withdrawal
B) Amphetamine intoxication
C) Antibiotic side effect
D) Benzodiazepine withdrawal
E) Cocaine intoxication
F) Nicotine withdrawal
G) Opioid withdrawal
H) Viral gastroenteritis