Catarrh is an accumulation of mucus in the nasal and throat passages. It is a common symptom of many respiratory conditions, including the common cold, flu, sinusitis, and hay fever. The main cause of catarrh is inflammation in the nasal and throat passages.
The inflammation is caused by a variety of factors, including:
- Infections: The most common cause of catarrh is viral infections such as the common cold and flu. Bacterial infections, such as sinusitis and tonsillitis, can also cause catarrh.
- Allergies: Allergic reactions to things such as pollen, dust, and animal dander can cause catarrh by triggering inflammation in the nasal and throat passages.
- Environmental factors: Exposure to cold air, pollution, and irritants such as cigarette smoke can cause catarrh.
- Hormonal changes: Hormonal changes in the body, such as those that occur during pregnancy or menopause, can cause catarrh.
- Certain medical conditions: Some medical conditions, such as cystic fibrosis, sarcoidosis, and rheumatoid arthritis, can cause catarrh as a symptom.
It’s important to note that the cause of catarrh can vary from person to person, so if you have persistent or severe symptoms, it is important to consult with a healthcare professional for an accurate diagnosis and appropriate treatment.