How to Treat High Fever with Physical Therapy

The child frequently has a fever, with body temperature fluctuating between 2 to 4 am in the afternoon and at midnight. After taking cold medicine, the fever subsides, but it recurs. They have been examined at a local health clinic, but no obvious cause was found, and only cold medicine and anti-inflammatory drugs were prescribed, but the symptoms did not improve. Please provide solutions and physical therapy methods.
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