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 infection caused by bacterium carried by deer ticks. If caught early, it is easily treated with antibiotics. If left untreated, the infection can spread to the joints, heart, and nervous system, causing a complex debilitating disorder that is more difficult to treat.yme Disease Causes. The bacterium that causes Lyme disease is called Borrelia burgdorferi. People get infected through a bite of an infected black-legged tick, which feed from mammals, birds, reptiles and amphibians.