Also, keep in mind that the tick season for Northern Illinois runs from March through November of each year, so we've got nearly four more months of tick anxiety to deal with. Emergency room visits for tick bites are skyrocketing across the United States, including here in the Midwest. WGNTV.com:More than 100 of every 100,000 emergency department visits recorded in April were because of tick bites, CDC data updated earlier this week shows. During the same time last year, tick bites accounted for only 68 out of every 100,000 visits. This year’s tick season has shaped up to be one of the busiest ones yet.