Since these symptoms have lasted for two to three weeks without improvement, I gently recommend scheduling an appointment with a doctor or an ear, nose, and throat specialist. Persistent symptoms require a professional examination to find the exact cause, which could be a specific infection or another issue requiring targeted treatment. In the meantime, please stay well-hydrated and try soothing warm salt water rinses.
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What should I do if my sore throat and the red spots on my tongue have not improved after two to three weeks, even though I am using Betadine gargle?