Dural arteriovenous fistulas - Symptoms and causes - Mayo Clinic
Mar 19, 2024 · Overview Dural arteriovenous fistulas (dAVFs) are irregular connections between arteries and veins. They occur in the tough covering over the brain or spinal cord, known as the dura mater. …
Pacemaker - Mayo Clinic
Jun 4, 2025 · Overview A pacemaker is a small, battery-powered device that prevents the heart from beating too slowly. You need surgery to get a pacemaker. The device is placed under the skin near …
Symptoms and causes - Mayo Clinic
Symptoms Body mass index, also known as BMI, is often used to diagnose obesity. To calculate BMI, multiply weight in pounds by 703, divide by height in inches and then divide again by height in …
Hematocrit test - Mayo Clinic
Overview A hematocrit (he-MAT-uh-krit) test measures the proportion of red blood cells in the blood. Red blood cells carry oxygen throughout the body. Having too few or too many of them can be a sign …
Plague - Symptoms and causes - Mayo Clinic
Apr 20, 2023 · Overview Plague is a serious illness caused by a germ called Yersinia pestis. The germs mostly live in small rodents and their fleas. The most common way for humans to get plague is a flea …
Chickenpox - Symptoms and causes - Mayo Clinic
Apr 19, 2023 · Chickenpox is an illness caused by the varicella-zoster virus. It brings on an itchy rash with small, fluid-filled blisters. Chickenpox spreads very easily to people who haven't had the disease …
Depression (major depressive disorder) - Symptoms and causes
Oct 14, 2022 · Depression is a mood disorder that causes a persistent feeling of sadness and loss of interest. Also called major depressive disorder or clinical depression, it affects how you feel, think …
Doxycycline (oral route) - Side effects & dosage - Mayo Clinic
Nov 1, 2025 · Description Doxycycline is used to treat bacterial infections in many different parts of the body. It is also used to treat pimples and abscesses (usually on the face) that are caused by …
Lisinopril (oral route) - Side effects & dosage - Mayo Clinic
Dec 1, 2025 · Description Lisinopril is used alone or together with other medicines to treat high blood pressure (hypertension). High blood pressure adds to the workload of the heart and arteries. If it …
Dermatitis - Symptoms and causes - Mayo Clinic
May 2, 2025 · Overview Dermatitis is a common condition that causes swelling and irritation of the skin. It has many causes and forms and often involves itchy, dry skin or a rash. Or it might cause the skin …