1, red, swollen, hot and painful ears. Things get worse when you chew with your mouth open. It can radiate to the ipsilateral temporal region. Often accompanied by fever and general malaise.
2. The ear canal is diffuse congestion, erosion, suppurative scab or mound bulge outside the external auditory canal, and there is pus at the top when it matures. After festering and purulent discharge, the earache was relieved.
3, tragus tenderness, pulling auricle pain, or mastoid skin redness, posterior auricular groove disappears, auricle stands up.
In addition, the cause of otitis externa is also for you. Do you have the following reasons? If so, it may be otitis externa:
1. water immersion: after swimming or washing the external auditory canal, if the ear is not cleaned, the skin will be soaked and damaged, which may easily lead to infection.
2. Changes of temperature and humidity: The increase of temperature and humidity can often lead to the change of chemical properties of cerumen and the blockage of cerumen glands, thus reducing its defense ability.
3. Trauma: Accidentally damaging the skin of the external auditory canal during ear digging, or scratching the skin by foreign bodies can make bacteria enter the epidermis or even the dermis, causing infection.
4. Insufficient cerumen: Because the cerumen of the external auditory canal of normal people is slightly acidic, it has anti-infection effect. When cerumen is deficient, the external auditory canal loses its antibacterial "acid coat", so it is easy to cause disease.
5. Otitis media: The stimulation of purulent secretion of acute and chronic suppurative otitis media often reduces the skin resistance of external auditory canal.
6. Allergy: Infection of external auditory canal on the basis of allergy. For example, patients with eczema of external ear are prone to otitis externa.
7. Systemic diseases: such as diabetes, endocrine disorders, chronic constipation, anemia, etc. are also easy to induce this disease.
Look at the above reasons from time to time. But it is better to go to the hospital for diagnosis and early treatment.