Common Cold
The common cold is a viral infection of the upper respiratory tract that affects the nose, throat, and sinuses. It is one of the most frequent illnesses and is usually mild, but it can still cause discomfort and disrupt daily activities. Colds are highly contagious and spread easily, especially in close-contact settings.
Quick Facts
- Caused by viruses, most commonly rhinoviruses
- Spreads through respiratory droplets and contact with surfaces
- Symptoms are usually mild and self-limited
- Most people recover without medical treatment
- Antibiotics are not effective against viral infections like the common cold
Symptoms
Symptoms typically develop gradually and may include:
- Runny or stuffy nose
- Sore throat
- Cough
Other symptoms may include sneezing, loss of taste and smell, mild headache, fatigue, or low-grade fever. In children, fever may be more common than in adults.
Common cold symptoms can sometimes be confused with flu, COVID, SARS, allergies, or sinus infections.
Causes
The common cold is caused by viruses that infect the upper respiratory tract.
It spreads through:
- Coughing or sneezing (respiratory droplets)
- Touching contaminated surfaces and then touching the face
- Close contact with infected individuals
Risk Factors
You may be at higher risk if you:
- Are in close-contact environments (schools, workplaces)
- Have a weakened immune system
- Are exposed to cold viruses frequently
- Do not wash hands regularly
Children tend to get colds more often due to frequent exposure and developing immune systems.
Treatments
There is no cure for the common cold, but treatment focuses on relieving symptoms.
Supportive care includes rest, fluids, and over-the-counter medications for symptom relief. Decongestants, pain relievers, and throat lozenges may help manage discomfort.
Recovery timeline for the common cold
- Symptoms typically last 7–10 days
- Some symptoms, such as cough, may linger slightly longer
Antibiotics are not used unless a bacterial complication develops.
When to Seek Care
See a healthcare provider if symptoms are severe, last longer than 10 days, or worsen after initial improvement.
Seek care sooner for high fever, difficulty breathing, or symptoms that may suggest complications such as a sinus infection or pneumonia.
Care may involve primary care or urgent care, depending on severity.
