Complications resulting from tonsillitis are uncommon, but some of the problems that can occur are outlined below.
Middle ear infection (also known as otitis media) is a build-up of mucus in the middle ear, between your ear drum and inner ear. In most cases, the infection clears by itself.
Quinsy is a rare condition that sometimes develops when infection spreads from a swollen tonsil to the surrounding area, causing an abscess (pus-filled swelling) in the throat. Abscesses can be easily treated using antibiotics, although a small operation to drain the pus may sometimes be needed.
Swelling of the face and neck, although rare, can potentially block the airways and prevent a person from breathing. Chronic tonsillitis can cause obstructive sleep apnoea, which prevents some of the oxygen from getting to your brain and may lead to disturbed sleeping patterns.
Blood poisoning (septicaemia) can occur if bacteria get into your bloodstream and multiply. The bacteria can be destroyed using antibiotics.
Glomerulonephritis (very rare) is inflammation (swelling) of the filters in your kidneys, caused by streptococcal bacteria.
Rheumatic fever is a rare condition that causes widespread inflammation (swelling) throughout the body.
Lemierre's syndrome is a rare condition in which bacteria spread from your throat to major veins in your neck. Small 'clumps' of bacteria then travel through your bloodstream to your lungs, joints and bones. Lemierre's syndrome can be easily treated with antibiotics but can be fatal if it is not diagnosed quickly.
Glossary