Nigua

Nigua, scientifically known as Tunga penetrans, is a tiny flea species that burrows into the skin of humans and other mammals. It is native to South America and sub-Saharan Africa, but has spread to other tropical and subtropical regions. The female flea is responsible for burrowing, typically into the feet, and lays eggs within the host's skin. This infestation is called tungiasis.

Symptoms of tungiasis include pain, itching, and inflammation at the site of infestation. Secondary bacterial infections can also occur due to the open wound created by the flea. In severe cases, especially with multiple infestations, complications such as tetanus, ulceration, and even gangrene have been reported.

Diagnosis is usually made through visual inspection of the characteristic lesion. Treatment involves the surgical removal of the flea, often with a sterile needle or scalpel. Prevention strategies include wearing protective footwear in endemic areas, maintaining good hygiene, and treating infected animals. While generally not life-threatening, tungiasis can cause significant discomfort and morbidity.