Clinical signs refer to observable symptoms or indications that can be used by medical professionals to diagnose, monitor and treat a patient's condition. These may include physical examination findings such as temperature, pulse rate, respiratory rate, blood pressure, heart sounds, abdominal examination, neurological examination, skin examination, etc., as well as laboratory test results or imaging studies that provide additional information about the patient's health status. Clinical signs can help identify underlying diseases, monitor disease progression and response to treatment, and guide medical decision-making.