Acute inflammation of the maxillary sinus - sinusitis is caused by inflammation of the lining of the sinus. Although not a dental condition the symptoms can often mimic toothache in the upper molar teeth. Sinusitis usually comes on after an upper respiratory tract infection (eg cold of flu).
Acute Sinusitis can usually be managed by local measures and over the counter medication.
Plenty of rest and fluids are important. Saline rinsing of the nose cavities or steam inhalations can also help.
Painkillers such as paracetamol or ibuprofen and will help with the pain or products containing decongestants may be preferred but these should not be taken by children under 6
If symptoms are severe and are not relieved by the above measures or if you have a rising temperature then see a GP as a course of antibiotics may be necessary.