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Strep is short for Streptococcus, a type of bacteria. There are several types. Two of them cause most of the strep infections in people: group A and group ...
What is stress? Stress is how your brain and body respond to a challenge or demand. When you are stressed, your body releases certain hormones. Hormones ...
What is a stroke? A stroke happens when there is a loss of blood flow to part of the brain. Your brain cells cannot get the oxygen and nutrients they ...
What is stuttering? Stuttering is a speech disorder. It involves interruptions in the flow of speech. These interruptions are called disfluencies. They ...
What is sudden cardiac arrest (SCA)? Sudden cardiac arrest (SCA) is a condition in which the heart suddenly stops beating. When that happens, blood stops ...
Sudden infant death syndrome (SIDS) is the sudden, unexplained death of an infant younger than one year old. Some people call SIDS "crib death" because many babies ...
What is suicide? Suicide is the taking of one's own life. It is a death that happens when someone harms themselves because they want to end their life. ...
There are many reasons to have surgery. Some operations can relieve or prevent pain. Others can reduce a symptom of a problem or improve some body function. ...
How well you and your doctor or provider communicate with each other is one of the most important parts of getting good health care. Being prepared can help ...
Can a tan be healthy? Some people think that tanning gives them a healthy glow. But tanning, either outdoors or indoors with a tanning bed, is not healthy ...
What is depression in teens? Depression in teens (ages 13-17) is a serious medical illness. It's more than just a feeling of being sad or "blue" for a few ...
What is teen sexual health? Teen sexual health is about how sex affects your physical and emotional health. It means knowing how to form healthy relationships ...
What is telehealth? Telehealth is the use of communications technologies to provide health care from a distance. These technologies may include computers, ...
What are temporomandibular disorders (TMDs)? Temporomandibular disorders (TMDs) are a group of more than 30 conditions that affect your temporomandibular ...
What is testicular cancer? Testicular cancer is a cancer that develops in the tissues of one or both testicles. The testicles, or testes, are part of ...
Tetanus is a serious illness caused by Clostridium bacteria. The bacteria live in soil, saliva, dust, and manure. The bacteria can enter the body through a deep ...
Throat cancer is a type of head and neck cancer. Throat cancer has different names, depending on which part of the throat is affected. The different parts of ...
What is thyroid cancer? Thyroid cancer is a cancer that starts in the tissues of the thyroid. Your thyroid is a small, butterfly-shaped gland in the front ...
What are ticks? Ticks are small parasites. They may look like insects, but they have eight legs and are related to spiders. Ticks feed on the blood of ...
What are tonsils? Tonsils are lumps of tissue at the back of the throat. There are two of them, one on each side. Along with the adenoids, tonsils are ...
