Two main types of sinusitis include:
- Acute sinusitis
- Chronic sinusitis
A person who has had symptoms of sinusitis for less than 3 weeks has acute sinusitis. Viruses are the most common cause for acute sinusitis, but some cases are caused by bacteria.
Common bacterial causes of sinusitis:
- Moraxella (Branhamella) catarrhalis
- Haemophilus influenzae
- Staphylococcus aureus
- Streptococcus pneumoniae
- Streptococcus pyogenes
A person who has had symptoms of sinusitis for more than 3 weeks has chronic sinusitis. It is most common in those who have persistent nasal congestion caused by allergies. Mold is a common cause of nasal allergies and chronic sinusitis.
Continue to Sinusitis Anatomy
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