Diseases & Conditions

A phobia is a fear of something. Generally, agoraphobia is a fear of situations that are hard to escape.

Benign prostatic hyperplasia (BPH) is when the prostate grows too large and causes problems. Learn what signs to watch for, and when to see your doctor.

This is a problem with your thyroid. That's a hormone-producing gland in your neck. The thyroid makes hormones that help control many activities in your body. These hormones affect things like your metabolism and heart rate. With hyperthyroidism, your thyroid makes more hormones than your body needs.

This is a problem with your thyroid. That's a hormone-producing gland in your neck. The thyroid makes hormones that help control many activities in your body. These hormones affect things like your metabolism and heart rate. With hypothyroidism, your thyroid does not make enough hormones to meet your body's needs.

This is a growth of cells in your thyroid. The thyroid is a hormone-producing gland in your neck. It makes hormones that help control many activities in your body. A thyroid nodule can interfere with your thyroid's function.

A vascular malformation is an abnormal growth of blood or lymph vessels. It doesn't shrink over time. It continues to grow slowly during life.

If you have too much serotonin in your body, it can lead to dangerous side effects. This is known as serotonin syndrome.

Serum sickness is an immune system reaction. It is triggered by antiserums or antivenins, and by certain types of proteins in medicines used to treat an infection or condition.

SSLR is linked to certain medicines used to treat an infection, and to other health conditions.

This sheet explains the procedure and your recovery.

Ehlers-Danlos syndrome (EDS) is a group of rare genetic disorders. These disorders affect the way collagen is made or used in the body.

Hemochromatosis is a condition in which a person's body is overloaded with iron. The extra iron builds up in various organs and can cause health problems. This video discusses the possible causes of hemochromatosis, typical symptoms, and what treatments are available.

These are disorders that are caused by a problem with our genetic code, which we call "DNA." You can be born with a genetic disorder. Or, you can develop one later in life. Let's take a few minutes to learn more.

This is a disorder of the immune system. It affects the thyroid. That's a hormone-producing gland in your neck. The thyroid makes hormones that help control many activities in your body. Hashimoto's disease damages your thyroid and keeps it from making enough thyroid hormone for your body's needs. We call that "hypothyroidism."

Lyme disease is an illness spread by the bite of an infected tick. A bull's-eye rash is a typical symptom that identifies this illness, which untreated can affect many parts of the body. This video explains how the illness develops and what you can do to protect yourself against tick bites.

This chronic autoimmune disease results in the immune system attacking the body's own healthy cells. Lupus most commonly affects women age 15-44. It causes tissue damage and inflammation, and can affect any part of the body.

If you're diagnosed with lupus, you may face some unexpected challenges. But lupus doesn't have to take over your life. These tips will help you manage it.

In the digestive system, cystic fibrosis (CF) mainly affects the pancreas. A child with CF has trouble absorbing fats, as well as some proteins and vitamins.

Detailed information on cystic fibrosis and its effect on the reproductive system.

Detailed information on cystic fibrosis and its effect on the respiratory system.

Children with cystic fibrosis often have poor weight gain. This can happen even when they get enough calories. Read on for details on how to make sure your child gets enough nutrients--and what to do if your child isn't gaining weight.

Detailed information on the genetics involved in cystic fibrosis.

Vasculitis is inflammation of the arteries and veins. It can damage organs and tissues.