Alphabetical guide of tests and procedures from Mayo Clinic experts. Click on test or procedure by first letter for more information.

Dec 10, 2022 · Overview Hypothyroidism happens when the thyroid gland doesn't make enough thyroid hormone. This condition also is called underactive thyroid. Hypothyroidism may not cause noticeable …

Dec 18, 2025 · Nasal congestion, also called stuffy nose, is a feeling of fullness in the nose or face. There also might be fluid running or dripping out of the nose or down the back of the throat. Nasal …

Aug 14, 2024 · Overview Bipolar disorder, formerly called manic depression, is a mental health condition that causes extreme mood swings. These include emotional highs, also known as mania or …

May 16, 2024 · Treatment Most common warts go away without treatment, though it may take a year or two and new ones may develop nearby. Some people choose to have their warts treated by a …

Mar 30, 2023 · Diagnosis Tests to diagnose hearing loss may include: Physical exam. A health care provider looks in your ear for possible causes of your hearing loss, such as earwax or an infection. …

Aug 22, 2025 · Diagnosis If a screening test shows hepatitis C, other blood tests can: Measure the quantity of the hepatitis C virus in the blood, called the viral load. Show the genotype of the virus. …

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 …

Dec 21, 2024 · Damage to the adrenal glands causes Addison's disease. Symptoms can start slowly. Early symptoms may include extreme tiredness, salt cravings and weight loss. Addison's disease can …

Description Methylphenidate is used to treat attention deficit hyperactivity disorder (ADHD). It belongs to the group of medicines called central nervous system (CNS) stimulants. Methylphenidate is also …