Symptoms and Causes

Overview Bronchiolitis affects the small airways (bronchioles) in a child’s lungs. It causes inflammation, swelling, and mucus buildup. This respiratory infection almost always comes from viral…

Overview A broken toe is a fairly common injury. It usually happens when something heavy falls on the foot or when a toe gets stubbed against…

Overview A broken rib happens when a bone in your rib cage cracks or breaks completely. This common injury typically results from strong impacts like falls,…

Overview A nasal fracture, commonly known as a broken nose, occurs when a bone in your nose breaks or cracks, typically the bone over the bridge….

Overview A broken foot involves a fracture to one or more of the foot bones. These injuries commonly result from sports activities, vehicle accidents, heavy objects…

Overview Brain arteriovenous malformations (AVMs) are abnormal tangles of blood vessels. These tangles create direct connections between arteries and veins, bypassing normal brain tissue. These unusual…

Overview Bladder stones form when minerals in urine harden into solid masses. These stones develop most often in people who cannot empty their bladder completely. While…

Overview Botulism is a rare but serious illness caused by a toxin made by Clostridium botulinum bacteria. This toxin attacks the nervous system and can lead…

What To Know About Black Hairy Tongue Black hairy tongue is a condition that makes the tongue appear dark and fuzzy. This happens when dead skin…

Overview Balance problems can cause dizziness, unsteadiness, or feelings of spinning. These symptoms may occur in any position—lying down, sitting, or standing. To maintain normal balance,…