Styes (), also hordeolum () are infections at the base of a human eyelid or the eyelash. They are usually formed in the lids and are small red bumps; these styes can be either external or internal. Styes are small-sized and rather short in duration. They happen particularly often in infants, although people of all ages can get it. They're triggered by eye rubbing or poor nutrition. They often last four days under treatment to two weeks without.