 spread by tiny ticks often smaller than the head of a pin. This dangerous disease is now more widespread than West Nile, tuberculosis, and HIV AIDS combined. And if left untreated, it can lead to arthritis, facial paralysis, and even memory and concentration problems, often called brain fog. As the threat of Lyme disease grows to more than 300,000 projected cases each year, it's time for us to target Lyme disease.