Lyme Disease exposure is highest during the spring and summer. Deer ticks, the most common cause of Lyme Disease, are out in higher numbers when the weather is warm. At the same time, people spend more time outdoors during the warmer months, increasing the chance of encountering a tick. If you do not take proper precautions like avoiding tall grassy areas, checking for ticks, or covering your skin with long sleeves and long pants, you ...