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  1. Obsessive-compulsive disorder (OCD) - Symptoms and causes

    Dec 21, 2023 · Overview Obsessive-compulsive disorder (OCD) features a pattern of unwanted thoughts and fears known as obsessions. These obsessions lead you to do repetitive behaviors, also …

  2. Blood in urine (hematuria) - Symptoms and causes - Mayo Clinic

    Dec 24, 2025 · Symptoms Blood in the urine can look pink, red or cola-colored. Red blood cells cause the urine to change color. It takes only a small amount of blood to turn urine red. The bleeding often …

  3. Doppler ultrasound: What is it used for? - Mayo Clinic

    Jul 3, 2025 · Doppler ultrasound is a noninvasive test that can be used to measure the blood flow through your blood vessels. It works by bouncing high-frequency sound waves off red blood cells that …

  4. Methyldopa (oral route, intravenous route) - Mayo Clinic

    Jan 1, 2026 · Description Methyldopa belongs to the general class of medicines called antihypertensives. It is used to treat high blood pressure (hypertension). High blood pressure adds to …

  5. Ingrown hair - Symptoms and causes - Mayo Clinic

    Jan 19, 2024 · Symptoms Signs and symptoms of ingrown hair include: Tiny, swollen bumps where you shave, tweeze or wax Small bumps that look like blisters or are filled with pus Small bumps that are …

  6. Heart attack: First aid - Mayo Clinic

    May 9, 2024 · How to recognize, get help for and provide first aid for a heart attack.

  7. Radiation sickness - Symptoms and causes - Mayo Clinic

    Feb 13, 2024 · Symptoms The severity of radiation sickness symptoms depends on how much radiation you've absorbed. How much you absorb depends on the strength of the radiated energy, the time of …

  8. Carotid ultrasound - Mayo Clinic

    Jan 15, 2025 · Carotid (kuh-ROT-id) ultrasound is a procedure that uses sound waves to look at blood flow through the carotid arteries. The carotid arteries are a pair of blood vessels on each side of the …

  9. Shock: First aid - Mayo Clinic

    Dec 24, 2025 · Shock is a critical condition brought on by the sudden drop in blood flow through the body. Shock may result from trauma, heatstroke, blood loss or an allergic reaction. It also may result …

  10. Positron emission tomography scan - Mayo Clinic

    Apr 16, 2025 · During a positron emission tomography (PET) scan, you lie on a narrow table that slides into a doughnut-shaped hole. The scanner takes about 30 minutes to produce detailed images of …