1. Nasal problems: Complications in the nasal cavity and nasal congestion.
2. Mouth problems: Mouth hurts, mouth smells bad. Toothache.
3. Eye problems: Eye pain. Ocular sinus infections can lead to fatal complications including periorbital and orbital cellulitis. An eye infection can damage the eye. Vision problems or blindness.
4. Head problems: headache and dizziness. Infections in the sinuses of the brain can lead to fatal complications. Infections of the brain can lead to meningitis and lesions in the brain (brain abscess).
5. Breathing problems: Asthma and difficulty in breathing. Cough at night. Seizures may occur.