Dr. Patrick Anastasio is an infectious disease specialist practicing in Fort Walton Beach, FL. Dr. Anastasio specializes in infections that are difficult to diagnose or unresponsive to treatments, such as HIV or airborne infections from a foreign country. Infectious disease specialists usually work with conditions that are not treatable by a primary physician but it is important to keep contact with the primary physician in order to receive information about the patients history and for deciding which diagnostic tests are appropriate.