
Urinary tract infection (UTI) - Symptoms and causes - Mayo Clinic
Learn about symptoms of urinary tract infections. Find out what causes UTIs, how infections are treated and ways to prevent repeat UTIs.
Stool color: When to worry - Mayo Clinic
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 …
Raynaud's disease - Symptoms and causes - Mayo Clinic
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 …
Urine color - Symptoms and causes - Mayo Clinic
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 …
Bronchitis - Symptoms and causes - Mayo Clinic
Jul 31, 2024 · Symptoms If you have acute bronchitis, you may have cold symptoms, such as: Cough Production of mucus (sputum), which can be clear, white, yellowish-gray or green in color — rarely, it …
Psoriasis - Symptoms and causes - Mayo Clinic
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 …
Color blindness - Diagnosis and treatment - Mayo Clinic
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 …
Tinea versicolor - Symptoms & causes - Mayo Clinic
Aug 11, 2025 · Tinea versicolor (TIN-ee-uh vur-si-KUL-ur) is a common skin infection caused by a fungus. The fungus causes patchy changes in skin color. The affected skin may look lighter or darker …
7 fingernail problems not to ignore - Mayo Clinic
Jun 30, 2023 · Nail pitting is when small round depressions or notches appear in the nails. It's common in people who have skin disorders such as psoriasis and eczema. Nail pitting also may be related to …
Melanoma - Symptoms and causes - Mayo Clinic
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 …