Here are some key points in the differential diagnosis based on the information provided:
- Sepsis (given fever, hypotension, leukocytosis)
- Pneumonia (given fever, leukocytosis, back pain on exam)
- Urosepsis (given fever, hypotension, leukocytosis)
- Endocarditis (given fever, hypotension, family history of "social drinking")
- Myocarditis/pericarditis (given fever, back pain)
- Drug-related toxicity (given multiple comorbidities and medications)
- Adrenal crisis (given multiple comorbidities)
Given the acute onset of fever and hypotension requiring intubation and vasopressors, sepsis