Coryza, also known as the common cold, is a mild viral infection of the upper respiratory tract, mainly affecting the nose, throat and sinuses. It is caused by several types of viruses, most commonly rhinoviruses, and is characterised by symptoms such as nasal congestion, runny nose, sneezing, sore throat, coughing and sometimes mild fever.


  • Runny nose (rhinorrhoea) and nasal congestion: Initial and most common symptoms of chorica.
  • Sneezing: Reflex reaction to irritation of the nasal mucosa.
  • Throat pain: Common symptom that may accompany or precede nasal congestion.
  • Cough: It can occur as the infection affects the throat and lower airways.
  • Fatigue and general discomfort: Although less severe than the flu, coryza can cause a feeling of tiredness and malaise.


Coryza is spread by respiratory droplets released into the air when an infected person coughs or sneezes, or by direct contact with contaminated surfaces. Viruses that cause coryza can survive on objects for a short period of time, allowing transmission to other people who touch those surfaces and then touch their faces.

Prevention and treatment

  • Prevention: Wash hands frequently, avoid close contact with sick people and use disposable tissues.
  • Treatment: There is no specific treatment for coryza, as most cases resolve on their own. Treatment focuses on relieving symptoms through rest, adequate hydration and the use of over-the-counter medications such as nasal decongestants and antihistamines.

Although coryza is a benign and self-limiting condition, it can be bothersome and significantly affects quality of life. People with weakened immune systems, the elderly and young children are more susceptible to complications such as secondary ear infections or pneumonia.