The common cold is a viral infection of your nose and throat (upper respiratory tract). It’s usually harmless, although it might not feel that way. Many types of viruses can cause a common cold.
Symptoms of a common cold usually appear one to three days after exposure to a cold-causing virus. Signs and symptoms, which can vary from person to person, might include:
- Runny or stuffy nose
- Sore throat
- Slight body aches or a mild headache
- Low-grade fever
- Generally feeling unwell