Jiggers are small parasitic fleas that burrow into the skin of a warm-blooded host before laying eggs. They are also known as tungiasis, sand fleas, chigoes, nigua, pique, bicho do pé, or jatecuba. Jiggers generally attack feet or hands, and at first, they appear as small black dots on the skin. As the females abdomen fills with blood and eggs, a bump forms underneath the skin, which is often painful and itchy and makes walking incredibly difficult. Only female jiggers burrow into the skin, and if left untreated, jiggers can lead to deadly secondary infections or even amputation. People suffering from jiggers usually attempt to remove them with safety pins, thorns, or other sharp, and often unsanitary, objects. Severe pathology following an infestation is caused by bacteria entering the skin when the jigger penetrates, which can lead to abscess formation, tissue necrosis, and gangrene.