It seems like you've switched topics rather abruptly! Let's break it down.
Usually, symptoms are indicative of an underlying issue or condition. Depending on what you're referring to, symptoms can vary widely. For example, if you're talking about fitness-related symptoms, they might include fatigue, muscle soreness, shortness of breath, etc.
Once a diagnosis is made, a treatment plan can be formulated. This might include medication, lifestyle changes, physical therapy, surgery, or a combination of these depending on the condition.
To determine the cause of symptoms, a diagnosis may involve medical tests, examinations, and possibly consultations with healthcare professionals. This could range from blood tests and imaging scans to more specialized tests depending on the suspected condition.