Rickettsia parkeri infection
The disease is seen where A. maculatum resides, which is predominantly in regions that border the Gulf of Mexico and the Atlantic Ocean. The Gulf Coast tick is also found in some regions of Central America, South America, and the Caribbean. In Uruguay and Argentina, cases have been attributed to Amblyomma triste and Amblyomma tigrinum. In 2014-2015, one confirmed and one probable case were identified in southern Arizona, with transmission attributed to A. triste.
Tick exposure increases with participation in outdoor activities in grassy areas during April through September and contact with household dogs and cats. Many patients will not recall a tick bite, as the bite is typically painless and the body location of the bite may be obscure.
A79.9 – Rickettsiosis, unspecified
416829003 – Disease due to Genus Rickettsia
- Rocky Mountain spotted fever (caused by R. rickettsii)
- Rickettsialpox (caused by R. akari)
- Boutonneuse fever (caused by Rickettsia conorii)
- African tick bite fever (caused by Rickettsia africae)
- Spotted fever (caused by Rickettsia felis)
- Drug eruptions
- Secondary syphilis