The most common symptom of a sinus headache is a feeling of pain and pressure around the location of the sinuses in the forehead, nose and cheeks. The discomfort usually becomes worse if the person leans forward or lies down. Nasal congestion is also a common symptom of a sinus headache. There may be soreness in the upper teeth which can be mistaken for a dental problem.
If a sinus headache is caused by a sinus infection (sinusitis), the headache may be accompanied by green or yellow mucus from the nose. The person may feel very unwell with a fever. Infections in the sinuses can cause bad breath.
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