Nov 16, 2024 · Raynaud's disease causes smaller blood vessels that supply blood flow to the skin to narrow in response to cold or stress. The affected body parts, usually fingers and toes, might turn …

Learn about symptoms of urinary tract infections. Find out what causes UTIs, how infections are treated and ways to prevent repeat UTIs.

Dec 30, 2023 · Melanoma is a kind of skin cancer that starts in the melanocytes. Melanocytes are cells that make the pigment that gives skin its color. The pigment is called melanin. This illustration shows …

Oct 11, 2025 · Overview Regular urine color ranges from clear to pale yellow. But certain things can change the color. Foods such as beets, blackberries and fava beans can turn urine pink or red, for …

Jul 18, 2025 · Hyponatremia is the term used when your blood sodium is too low. Learn about symptoms, causes and treatment of this potentially dangerous condition.

May 11, 2023 · Red blood cells have an iron-rich protein that gives blood its red color, called hemoglobin. Hemoglobin lets red blood cells carry oxygen from the lungs to all parts of the body. And …

Dec 17, 2025 · The patches vary in color, depending on skin color. The affected skin might heal with temporary changes in color (post inflammatory hyperpigmentation), particularly on brown or Black …

Oct 10, 2024 · Stool color is generally influenced by what you eat as well as by the amount of bile — a yellow-green fluid that digests fats — in your stool. As bile travels through your digestive tract, it is …

Jan 10, 2025 · Diagnosis If you have trouble seeing certain colors, an eye care professional can test for a color deficiency. Testing likely involves a thorough eye exam and looking at specially designed …

Feb 1, 2024 · Vitiligo (vit-ih-LIE-go) is a disease that causes loss of skin color in patches. The discolored areas usually get bigger with time. The condition can affect the skin on any part of the body. It can …