What is helicobacter pylori Helicobacter pylori (H. pylori) is a spiral-shaped bacterium that grows in the mucus layer that coats the inside of the human
What is a febrile seizure Febrile seizures are febrile convulsions that can happen during a fever (febrile means "feverish"). They affect kids 3 months to
What is Horner's syndrome Horner's syndrome (also called oculosympathetic paresis or Horner syndrome) is a disorder that affects the eye and surrounding tissues on one side
What is entropion Entropion is the turning in of an edge of an eyelid. Entropion is most often is seen on the lower eyelid where
What is chronic hives Hives (urticaria) are common red, itchy welts (weals or wheals) that result from a skin reaction. A welt (or weal) is
Spider bites It can be difficult to know if a bite from a spider is dangerous or not. However, most spider bites are harmless. Occasionally,
What is priapism Priapism is defined as painful, unwanted erection of the penis that is sustained for longer than 4 hours despite a lack of
What is keratitis Keratitis is an infection or inflammation of the cornea. The cornea is the clear, dome-shaped window of the front of your eye
What is zika virus Zika virus is an infection that is spread by mosquitoes and/or sexual contact. Zika virus is spread mostly by the bite
