Differential Diagnosis for Running Nose, Cough, Fever
Single Most Likely Diagnosis
- Viral Upper Respiratory Tract Infection (URTI): This is the most common cause of the symptoms described, including running nose, cough, and fever. It is often caused by viruses such as rhinovirus, coronavirus, or influenza virus, and is highly contagious.
Other Likely Diagnoses
- Influenza: While similar to URTI, influenza can present with more severe symptoms, including high fever, significant fatigue, and sometimes more pronounced cough. It's a seasonal illness that can be confirmed with specific testing.
- Allergic Rhinitis: This condition can cause running nose and cough, but fever is less common. It's an allergic reaction to airborne allergens like pollen, dust mites, or pet dander.
- Acute Bronchitis: Often follows a viral infection, acute bronchitis can cause cough and sometimes fever. It's an inflammation of the bronchial tubes, usually resulting from a viral infection.
Do Not Miss Diagnoses
- Pneumonia: Although less common, pneumonia is a serious condition that can present with cough, fever, and sometimes running nose. It's an infection of the lungs that can be caused by bacteria, viruses, or fungi, and requires prompt medical attention.
- Pertussis (Whooping Cough): A highly contagious bacterial infection that can cause severe coughing fits, sometimes accompanied by a whooping sound. Fever and running nose may also be present.
- Tuberculosis (TB): A less common but serious bacterial infection that primarily affects the lungs, causing cough, fever, and sometimes other symptoms like weight loss and night sweats.
Rare Diagnoses
- Cystic Fibrosis: A genetic disorder that can cause severe respiratory and digestive problems, including chronic cough and recurrent lung infections. It's rare and usually diagnosed in childhood.
- Immunodeficiency Disorders: Conditions where the immune system is impaired, making the individual more susceptible to infections, including those causing running nose, cough, and fever.
- Leukemia: Certain types of leukemia can cause symptoms like fever and cough due to immunosuppression and increased susceptibility to infections. It's a rare diagnosis in the context of these symptoms.