Recently, a young man in his 20s came to the clinic, covering his ears with a very painful expression. After sitting down, the young man took off the Bluetooth headset from his ears and said that his ears were particularly painful after waking up this morning, and the pain was even more intolerable when he opened his mouth to speak or eat. I put on a frontal lens to give him an examination, only to see the affected ear of the external auditory canal are swollen, the tympanic membrane can not be seen clearly. This is clinically known as an external auditory canal boil. External auditory canal boils occur in the cartilaginous part of the external auditory canal and are also known as limited otitis externa. Self-pulling out of the ear, swimming, prolonged pus in the middle ear and eczema in the external auditory canal can induce this disease. The main symptom is severe, throbbing earache, especially when opening the mouth and chewing, often radiating to the head. If the boil is large and blocks the external auditory canal, hearing loss may occur. Now, bluetooth headset is very popular, you can listen to songs, receive and play cell phones, but due to the headset plugged into the ear canal, walking or activities will cause friction in the ear canal, if you wear headphones for a longer period of time or stuffed too tightly, it will cause the ear canal to produce some inflammation and oozing, in addition, the external auditory canal of the skin is relatively thin, there is almost no amount of subcutaneous tissues, blood circulation is relatively poor, connected to the cartilage, the bacterial invasion of the opportunity to take advantage of the special! It is easy to cause swelling of the external ear canal, resulting in ear pain. Generally speaking, it is best not to wear Bluetooth headphones frequently, and not to stuff them too tightly when wearing them. It is important to clean the ear cotton or earplugs regularly. Don’t share earplugs with others. When wearing headphones, pinch the earlobe with your hand, pull down on the earlobe to make the ear canal wider, and then gently push the ear set further into the ear canal with your index finger, and then let go of the earlobe. After removing the headphones, often do ear care exercises, such as pulling the earlobe and gently rubbing the outer ear canal.