Evaluate a patient's health information and provide a diagnosis.
Patient Name: John Doe
Age: 18
Symptoms: Headache, fever, body aches
John Doe, age 18, may be suffering from influenza.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Evaluate a patient's health information and provide a diagnosis.

### Response:
John Doe, age 18, may be suffering from influenza.