Allergic conjunctivitis is an eye inflammation caused by an allergic reaction to substances like pollen. Your eyes may become red, itchy, and watery.
Learn about what causes allergies, the different types of allergies, and how they're treated.
Ebola disease is a rare, often fatal illness. One of its late-stage symptoms is a bleeding rash over the entire body.
Agammaglobulinemia is an inherited immune system disorder in which the body is unable to produce antibodies.
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.