“…These articles also help catalog the conditions that either are extraordinarily rare or have no clearly defined association with Lyme disease but are tenuously grasped by some based perhaps on chance coincidence, such as "congenital" Lyme disease, cardiomyopathy, hearing loss, optic neuritis, multiple sclerosis, Alzheimer disease, Parkinson disease, or amyotrophic lateral sclerosis. [17][18][19][20][21][22] Knowledge regarding Lyme disease is only a part of what clinicians should know regarding illnesses that could represent other potential infections transmitted by the black-legged deer tick. Excellent reviews covering these aspects include human granulocytic anaplasmosis by Dumler and Bakken (See article by Dumler and Bakken, "Human Granulocytic Anaplasmosis", in this issue) and babesiosis by Krause and colleagues (See article by Krause and colleagues, "Babesiosis", in this issue).…”