Related Conditions

Allergies

For most people, allergies mean itchy eyes and a drippy nose. But for a few people, allergies to things like bee stings or nuts cause a whole-body reaction that can be life-threatening. Whether your allergies are dangerous or just annoying, the information in our Learning Center can help you cope.

Leukemia

Leukemia is cancer of the blood cells. It starts in the bone marrow, the soft tissue inside most bones. Bone marrow is where blood cells are made.

Polycythemia Vera

Polycythemia vera is a rare blood disorder in which there is an increase in all blood cells, particularly red blood cells. The increase in blood cells makes your blood thicker, which can lead to strokes or tissue and organ damage.