Differential Diagnosis for a 61-year-old Male with Fever, Sore Throat, and Mild Cough
- Single most likely diagnosis:
- Viral pharyngitis (e.g., caused by rhinovirus, coronavirus, adenovirus, or influenza): This is the most likely diagnosis given the symptoms of fever, sore throat, and mild cough, which are common presentations of viral upper respiratory infections.
- Other Likely diagnoses:
- Bacterial pharyngitis (e.g., streptococcal pharyngitis): Although less common than viral causes, bacterial pharyngitis can present similarly and is important to consider, especially if symptoms are severe or persistent.
- Influenza: Given the symptoms of fever, sore throat, and cough, influenza is a plausible diagnosis, particularly during flu season.
- Acute bronchitis: This condition, often caused by viral infections, can present with cough and may be considered, especially if the cough is more prominent.
- Do Not Miss diagnoses:
- Epiglottitis: Although rare, epiglottitis is a life-threatening condition that can present with sore throat and fever. It requires prompt recognition and treatment.
- Pneumonia: Bacterial or viral pneumonia can present with similar symptoms and is critical to diagnose early due to the potential for severe complications.
- Lemierre's syndrome: A rare but serious condition characterized by bacterial pharyngitis followed by septic thrombophlebitis of the internal jugular vein, which can be life-threatening if not recognized and treated.
- Rare diagnoses:
- Infectious mononucleosis (mono): Caused by Epstein-Barr virus, it can present with sore throat and fever but is less common in older adults.
- Diphtheria: A rare bacterial infection that can cause severe respiratory illness, characterized by a membrane covering the tonsils and throat.
- Tuberculosis (TB): Although TB can cause chronic cough and fever, it is less likely to present acutely with sore throat and would be considered based on additional risk factors or symptoms.