Due to their young age, babies are not yet able to describe accurately in words. When acute otitis media, otitis externa, or boils in the ear canal can cause ear discomfort or even painful sensations. There are usually some physical manifestations, such as frequent scratching of the ears and cheeks, patting the head and face, twisting the head back and forth, etc. There are also personal behavioral manifestations such as crying and restlessness, refusal to eat and drink, and breastfeeding. If any of these signs occur, parents need to check carefully for redness and swelling of the outer ear and ear auricle, secretions from the ear canal, and normal body temperature. Combine this with the medical history to see if there has been any recent upper respiratory tract infection, bathing in water, ear-extraction injury, or choking on milk while nursing in a flat position. You need to go to the ENT department of the hospital in time to get a clear diagnosis.