Asphalt poisoning is usually predominantly inhalational and usually begins with sensations such as dryness and pain in the nose or throat. If the gas irritates the eyes, dry eyes, eye pain, and tearing may also occur. If the gas irritates the bronchial tubes or the lungs, an irritating cough may occur. If the patient has a history of asthma, an asthma attack may also be triggered, and dyspnea may occur. If the dyspnea is severe, it can also lead to cyanosis of the lips or skin all over the body. Dizziness, nausea, vomiting, weakness of limbs, and blurred consciousness may also occur. In the most severe cases, coma and shock may occur, or liver and kidney failure may occur, resulting in oliguria, anuria, generalized swelling, and generalized yellowing of the skin.