For Parents

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.

Jaundice is a yellow color in the skin, the mucous membranes, or the eyes. The yellow pigment is from bilirubin, a byproduct of old red blood cells.

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

The jaw is the bony structure that surrounds your mouth and teeth and moves up and down when you chew. When injured, it can break or move out of position.The upper jaw is called the maxilla; the lower jaw is called the mandible. Only the lower jaw bone moves. The two parts of the jaw bone are connected to the skull by a joint in front of the ears (temporomandibular joint). Strong muscles run from the jaw to the skull.A broken or dislocated jaw is a common injury. A dislocated jaw means the lower part of the jaw has moved out of its normal position at one or both temporomandibular joints. A fractured jaw means there is a break in the jaw bone.

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 poisoning caused by eating pieces of the Jerusalem cherry plant.

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

This is poisoning from swallowing jewelry cleaner.

This is poisoning from sucking the juice or eating the seeds from a jimsonweed plant. You can also be poisoned by drinking tea made from the leaves.Jimsonweed is known as Jamestown weed, thorn apple, stinkweed, Datura, and moonflower.