Pronunciation: tung'ga pen'e-tranz
Definition: A member of the flea family, Tungidae, commonly known as chigger flea, sand flea, chigoe, or jigger; the minute female penetrates the skin, frequently under the toenails; as she becomes distended with eggs to about pea size, a painful ulcer with inflammation develops at the site.
Synonym(s): Sarcopsylla penetrans
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Examples: glitazone, GI cocktail, etc.