A heatwave is caused by a system of higher atmospheric pressure. In a high pressure system, air from upper levels of the atmosphere descends and rotates outward. As it comes down, it becomes compressed, which increases its temperature and dries it out.
Lyme disease: An inflammatory disease that is caused by the bacterium Borrelia burgdorferi, which is transmitted to humans by the deer tick. The first sign of Lyme disease is a red, circular, expanding rash, usually radiating from the tick bite, followed by flu-like symptoms and joint pains.
Lyme disease is a bacterial infection typically transmitted through the bite of an infected tick. If diagnosed in its early stage, Lyme disease can be easily treated with antibiotics. But, delayed diagnoses can make treatment and recovery more difficult. The Centers for Disease Control and Prevention (CDC) estimate that at least 300,000 people in the United States are infected with Lyme disease each year.