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  1. The leading source for trustworthy and timely health and medical news and information. Providing credible health information, supportive community, and educational services by blending award ...

  2. 2023年11月10日 · Cough. Shortness of breath. Some children and teens who are hospitalized with COVID-19 have an inflammatory syndrome that may be linked to the coronavirus. Doctors call it pediatric multisystem ...

  3. 2024年3月22日 · Very high levels of triglycerides are associated with liver and pancreas problems. Triglyceride levels above 1,500 mg/dL are considered extremely high and may cause the body to stop breaking down ...

    • Pathophysiology
    • Significance
    • Signs and symptoms
    • Overview
    • Prognosis

    A blood pressure reading appears as two numbers. The first and higher of the two is a measure of systolic pressure, or the pressure in the arteries when the heart beats and fills them with blood. The second number measures diastolic pressure, or the pressure in the arteries when the heart rests between beats.

    Optimal blood pressure is less than 120/80 (systolic/diastolic). In healthy people, low blood pressure without any symptoms is not usually a concern and does not need to be treated. But low blood pressure can be a sign of an underlying problem -- especially in the elderly -- where it may cause inadequate blood flow to the heart, brain, and other vi...

    Chronic low blood pressure with no symptoms is almost never serious. But health problems can occur when blood pressure drops suddenly and the brain is deprived of an adequate blood supply. This can lead to dizziness or lightheadedness. Sudden drops in blood pressure most commonly occur in someone who's rising from a lying down or sitting position t...

    Postural hypotension is considered a failure of the cardiovascular system or nervous system to react appropriately to sudden changes. Normally, when you stand up, some blood pools in your lower extremities. Uncorrected, this would cause your blood pressure to fall. But your body normally compensates by sending messages to your heart to beat faster ...

    The risk of both low and high blood pressure normally increases with age due in part to normal changes during aging. In addition, blood flow to the heart muscle and the brain declines with age, often as a result of plaque buildup in blood vessels. An estimated 10% to 20% of people over age 65 have postural hypotension.

  4. 2023年9月19日 · This test checks the amount of certain antibodies called immunoglobulins in your body. Antibodies are proteins that your immune cells make to fight off bacteria, viruses, and other harmful ...

  5. 2022年9月16日 · Retinal Disorders. Conjunctivitis (Pinkeye) Corneal Diseases. Eyelid Problems. Vision Changes. Problems With Contact Lenses. 9 min read. Most people have eye problems at one time or another. Some ...

  6. 2023年11月15日 · Acute onset atrial fibrillation. This rapid, chaotic heartbeat comes on quickly and goes away quickly. It usually resolves by itself in 24 to 48 hours. Causes include age, cardiovascular disease ...