Aspirin is a medicine that relieves pain and reduces fever. It was first created in 1899 by a German chemist to treat his father's arthritis. Aspirin is quickly absorbed and provides rapid and long-lasting pain relief. It can be used to treat minor pains like headaches and toothaches, as well as more serious conditions like heart attacks. While it has many uses, aspirin also carries risks like Reye's syndrome in children and upset stomach or bleeding in some adults and animals. It works by reducing fever and pain but should only be used under a doctor or veterinarian's guidance.