Burning in the left ear may be clinically relevant in the following cases: 1. Physiological. Some patients have hot ears due to blood circulation at the end of the ear after doing strenuous activities; some patients, such as those who are nervous, angry, or quarreling with others, may also have hot ears due to blood congestion in the ear; other patients just return from a cold place to a very warm place, which leads to heat expansion and cold contraction of the blood flow in the ear, and may also have hot sensations; some patients have congestion, redness, and hot performance in the ear after being squeezed. These are physiological, and the ear temperature will return to normal after a period of time. 2. Inflammation caused by. Some patients have auricular chondromyelitis, including local inflammation invading cartilage and cartilage membrane, resulting in redness, swelling, heat, pain, fluctuating sensation, pus flow and pus formation in the auricle. Other patients have auricular denervation, which also results in a burning sensation and discomfort on the auricle. Other diseases, such as acute otitis externa and acute tympanitis, can also cause the ears to show signs of heat and burning. All in all, if a patient has hot and burning ears it should be closely observed to rule out the possibility of disease.