Diseases & Conditions

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.

A food allergy is when your body has a bad immune reaction to a certain food. This is different than a food intolerance, which does not affect the immune system. Read on to learn more.

Peritonitis is a redness and swelling (inflammation) of the tissue that lines your belly or abdomen. This tissue is called the peritoneum.

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

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.

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.

Watch this video to learn about the unique problems sickle cell disease can cause in women.

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

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.