Some causes of chills and shaking include exposure to cold, and bacterial and viral infections such as colds, influenza, malaria, strep throat and urinary tract infection, according to Healthline. Chills and shaking may also be as a result of meningitis, pneumonia and infectious mononucleosis.
Cold and influenza infections attack the respiratory system, causing symptoms such as cough, sore throat and headache,says Healthline. They are spread from one person to another through sneezing and coughing. Malaria, on the other hand, is transmitted through Anopheles mosquito bites. In addition to chills, malaria can also cause nausea, fever and diarrhea.
Strep throat is a bacterial infection in which the throat becomes swollen and painful, notes Healthline. It commonly attacks children, resulting in chills, fever and headache. Urinary tract infection, also known as bladder infection, is caused by bacteria and attacks the kidneys, ureter, urethra and the bladder, leading to chills.
Chills cause a person to feel cold, and the condition is accompanied with shaking, explains Healthline. Chills occur as a result of repeated muscle relaxation and contraction during heat production. The condition can be continuous or periodic. Because young children are vulnerable to fever, they are more prone to chills than adults. Additionally, fever is typically higher in young children than in adults, rendering the children more prone to chills.