沙蚤病（英语：Chigoe flea）(Tungiasis)是一种由沙蚤Tunga penetrans (chigoe flea 又称 jigger)侵入人体皮肤的寄生疾病。沙蚤是一种寄生节肢动物，常见于热带与副热带国家。其源自于中美洲与南美洲，经由人类活动带入非洲萨哈拉以南地区，现今可在非洲热带地区、加勒比海国家与印度发现其踪迹。沙蚤约1毫米大小是目前已知最小的跳蚤。母沙蚤穿透人体表皮，然后在表皮与真皮层进行寄生与产卵就是沙蚤病。跳跃能力约为20公分高，与它种跳蚤比起来，算是相当有限。也因此穿上能够完整包覆脚部的鞋子是最能有效预防沙蚤寄生的方式。

Tunga penetrans (chigoe flea or jigger) is a parasitic insect found in most tropical and sub-tropical climates. It is native to Central and South America, and has been inadvertently introduced by humans to sub-Saharan Africa. At 1 mm long, T. penetrans is the smallest known flea. Synonyms for Tunga penetrans include Sarcopsylla penetrans, Pulex penetrates, and many others. An infestation of T. penetrans is called tungiasis.