Articles

A Jack-in-the-pulpit is a plant belonging to the species Arisaema triphyllum. This article describes poisoning caused by eating parts of this plant. The roots are the most dangerous part of the plant. This is for information only and not for use in the treatment or management of an actual poison ...

Jaundice is a yellow color in the skin, mucus membranes, or eyes. The yellow pigment is from bilirubin, a byproduct of old red blood cells. Jaundice is also a symptom of other disorders. This article is about jaundice in children and adults. See also: for information about babies

Jaundice-associated conditions are diseases or conditions that cause yellow skin ().

A broken jaw is a break in the jaw bone. A dislocated jaw means the lower part of the jaw has moved out of its normal position at one or both joints where the jaw bone connects to the skull (temporomandibular joints).

Jellyfish are sea creatures that have a nearly see-through (transparent) body with long finger-like structures called tentacles. Stinging cells inside the tentacles can hurt you if you come in contact with them. Some stings can cause serious harm. This is for information only and not for use in ...

The Jerusalem cherry is a plant that belongs to the same family as the deadly . It has small, round, red and orange fruit. Jerusalem cherry poisoning occurs when someone eats pieces of this plant. This is for information only and not for use in the treatment or management of an actual poison ...

Jet lag is a sleep disorder that occurs when the body’s biological clock does not correspond to local time. This is common when traveling across different time zones.

This article discusses the harmful effects that can occur from swallowing jewelry cleaner or breathing in its fumes. This is for information only and not for use in the treatment or management of an actual poison exposure. If you have an exposure, you should call your local emergency number (such ...

Jimsonweed is a tall herb plant. Jimsonweed poisoning occurs when someone sucks the juice or eats the seeds from this plant. You can also be poisoned by drinking tea made from the leaves. This is for information only and not for use in the treatment or management of an actual poison exposure. If ...

Jock itch, also called tinea cruris or ringworm of the groin, is an infection of the groin area caused by fungus.

Joint fluid Gram stain is a laboratory test to identify bacteria in a sample of joint fluid using a special series of stains (colors). The Gram stain method is one of the most commonly used methods to rapidly diagnose bacterial infections.

Joint pain can affect one or more joints. See also: (inflammation of joints)

Joint swelling is the buildup of fluid in the soft tissue surrounding the joint.

This test is an of a knee, shoulder, hip, wrist, ankle, or other joint.

Juvenile angiofibroma is a noncancerous growth of the back of the nose or upper throat.

Juvenile rheumatoid arthritis (JRA) is a term used to describe a common type of arthritis in children. It is a long-term (chronic) disease resulting in joint pain and swelling.