Headaches may occur on one or both sides of the head, be isolated to a certain location, radiate across the head from one point, or have a viselike quality. A headache may appear as a sharp pain, a throbbing sensation or a dull ache. Headaches can develop gradually or suddenly, and may last from less than an hour to several days.
Ehrlichiosis and anaplasmosis are caused by different bacteria. Ehrlichiosis is caused by different species of ehrlichia bacteria. The Lone Star tick — found in south-central, southeastern and eastern coastal states — is the primary carrier of bacteria causing ehrlichiosis.
Primary headaches are caused by changes to blood vessels, nerves, and chemicals in the brain. Secondary headaches are caused by another condition, such as an infection or head injury. Your symptoms can help you figure out which type of headache you’re experiencing.