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Description:This photograph depicts a dorsal view of an engorged female "lone star tick", Amblyomma americanum. Note a number of round, amber-colored eggs showing from beneath the head region, which were just laid by this female. An engorged female of this species can lay approximately 2000-2500 eggs. To view additional images related to this tick specie, see PHIL 4407, 8676, 8677, and 8679 through 8685.
Symptoms and Diagnosis:

Persons who have been bitten by a lone star tick, A. americanum, and who develop a red, expanding rash with central clearing, known as “erythema migrans”, headache or myalgia with fever, should see their physician. The Centers for Disease Control and Prevention (CDC) is interested in obtaining samples from such patients under an Institutional Review Board-approved investigational protocol

Prevention and Treatment:

Prevention measures similar to those for the Lyme disease vector will reduce your exposure to infected ticks. See Lyme Disease Prevention and Control for information on how to:

- avoid tick habitats,

- reduce tick abundance,

- use personal protection equipment, and

- check and remove ticks.

High Resolution: Click here for hi-resolution image (15.1 MB)
Content Providers(s):CDC/ Dr. Amanda Loftis, Dr. William Nicholson, Dr. Will Reeves, Dr. Chris Paddock
Creation Date:2006
Photo Credit:James Gathany
Links:CDC - Nat. Center for Infection Diseases; Div. of Vector-Borne Infectious Diseases; Lyme Disease Prevention and Control
CDC - Nat. Center for Infection Diseases; Div. of Vector-Borne Infectious Diseases; "Southern Tick-Associated Rash Illness"
CDC Organization
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Copyright Restrictions:None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.