Gallbladder attacks can happen suddenly — often without warning — and the symptoms can range from uncomfortable to alarming. For many people, the pain starts under the ribs or in the upper right side ...

Huntington's disease is a neurodegenerative disorder that occurs due to a mutation in the HTT or huntingtin gene. It is generally inherited, but a new mutation causes ten percent of cases. Every ...

An electrocardiogram, called an EKG or ECG, measures the electrical activity of the heart and collects data about heart's health. Typically, a doctor or technician places electrodes connected to a ...

The perineum is the area between the thighs and below the pelvis, between the coccyx and symphysis pubis. The pelvic diaphragm forms the top of the perineum, and the floor is skin and muscle fascia.

Nitric oxide isn’t a nutrient you’ll find on food packaging — but it plays a critical role in how your body moves, recovers, and circulates blood. This molecule helps blood vessels relax and widen, ...

Epimedium is a flowering plant found mostly in China, though it grows in other parts of Asia and around the Mediterranean, as well. The shape of its flowers earned it the moniker "Bishop's Hat," but ...

Peripheral neuropathy is a broad term for any condition that damages the peripheral nerves that transfer sensory information and carry signals from the central nervous system in the brain and spinal ...

Goosebumps occur when the arrector pili contract. These tiny muscles are attached to each hair on the body. The contractions cause a depression in the skin that pushes the hair upright and makes the ...

Ammonia is a chemical that both occurs naturally and can be created. It is a colorless gas — one part nitrogen and three parts hydrogen — with a foul smell that most people easily recognize.

Lower back pain is extremely common, affecting millions of people every day. But what does it mean when the pain is felt only on one side? One-sided lower back pain could represent a minor issue that ...

A nodule is an abnormal tissue growth that can appear anywhere in the body and can form for various reasons. Depending on their location, nodules may not cause symptoms, and many people with nodules ...

Mottled skin, a piebald-like purple or blue coloration on the skin, is caused by a vascular condition. The discoloration often resembles a web or lace-like pattern. Mottled skin usually develops on ...