Science University publishes general educational information about biology, the human body, immunity, disease and health. This material is not individualized medical advice.
Nothing on this website should be used as a substitute for diagnosis, treatment or advice from a qualified health professional who can evaluate your specific circumstances. Do not delay or disregard professional medical care because of something you have read here.
If you believe you may be experiencing a medical emergency, contact the emergency service available in your location. Questions about medicines, symptoms, tests or treatment choices should be discussed with an appropriate licensed clinician.
Scientific and medical knowledge changes over time. Although Science University aims to use reliable sources and update material when evidence changes, no general reference page can account for every individual clinical situation.