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 an illness thatâs caused by bacteria carried by infected ticks. If youâve been bitten by a tick and show any of the early symptoms of Lyme disease, you should see your doctor. Lyme disease is treatable, but it can cause serious health problems if you wait too long get treatment.