Yes, tonsils can become chronically infected especially by bacteria called Streptococcus or 'Strep'. This may result is several possible chronic illnesses in children including a kidney disease called Nephritis. Also a heart disease called Rheumatic Fever. Sometimes children develop a disease of their joints called Juvenile Rheumatoid Arthritis.
Your daughter must be seen by a paediatrician.You should get a second opinion if your daughter's illness has still not been diagnosed after 3 years.
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