Final answer:
The adolescent female's bilateral joint pain following flu-like symptoms could suggest Lyme disease, which is diagnosed with serological testing and treated with antibiotics like doxycycline or amoxicillin.
Step-by-step explanation:
The clinical scenario suggests the adolescent female may be suffering from Lyme disease, especially given the context of her flu-like symptoms followed by bilateral joint pain. While other autoimmune conditions might present similarly, her recent history of flu-like illness and the common occurrence of Lyme disease after such symptoms provide a reasonable clinical suspicion. Diagnosis may be confirmed through blood tests that look for antibodies against the bacteria responsible for Lyme disease.
Treatment typically includes a course of antibiotics, such as doxycycline or amoxicillin, over several weeks to clear the infection. This approach is generally successful, especially when the disease is caught early. Symptom management might also be necessary depending on the severity of joint pain and any other associated symptoms she is experiencing.