chronic otitis externa
Introduction
Introduction to chronic otitis externa Chronic otitis externa is a chronic or recurrent inflammation of the skin and subcutaneous tissue of the external auditory canal. Clinically, after the occurrence of otitis externa, if you do not pay attention to early control of the disease and treatment, it is easy to cause deafness and tinnitus and other diseases. When it changes to serous or purulent secretions, it usually causes the skin to become swollen, the tympanic membrane is obscured, affecting hearing, and thus producing conductive deafness and tinnitus. Because the external auditory canal inflammation is not stimulated, the earlobe will be affected; if acute otitis externa is not If it is not treated promptly, it will turn chronic. Once converted to chronic otitis externa, the ear often produces discomfort and itching, with a small amount of secretions, and hearing will gradually diminish. basic knowledge The proportion of illness: 0.001% Susceptible people: no special people Mode of infection: non-infectious Complications: deafness
Cause
Causes of chronic otitis externa
Lack of sputum (25%):
Because the sputum of the external auditory canal is slightly acidic, it has anti-infective effect. When the sputum is lacking, the external auditory canal loses its antibacterial acid coat, which is easy to cause disease.
Infection factor (35%):
1. Inadvertently damage the skin of the external auditory canal when the ear is ear-cut, or foreign objects scratch the skin, which may cause bacteria to enter the epidermis or even the dermis, causing infection. 2. After swimming or washing the external auditory canal, if the ear is not cleaned, the skin is impregnated and damaged, which may cause infection.
Temperature and humidity changes (15%):
Increased temperature and increased humidity can often lead to changes in the chemical properties of the sputum and blockage of the parotid duct, thereby reducing its defensive capabilities.
Systemic disease (10%):
Such as diabetes, endocrine disorders, chronic constipation and anemia are also easy to induce this disease.
Prevention
Chronic otitis externa prevention
First of all, you should quit the bad habit of dig ear, dig the ear not only damage the skin to cause infection, but also often stimulate the skin is also easy to grow "external ear canal papilloma", so that the ear canal often bleeding, and even affect hearing, and second, to prevent sewage into the ear, in the wash Head, before swimming, you can use a special rubber stopper or clean cotton ball to apply grease to block the external auditory canal. It is necessary to remove the external auditory canal or foreign body in time. Finally, care should be taken to keep the ear dry and avoid damage.
1, pay attention to health when not sick, especially children, who have suppurative otitis media, ear edema, infant eczema, should pay special attention to local clean and dry, keep the ear and its surroundings clean, and be careful not to mess ear.
2, after the disease, avoid washing, such as its contamination or accumulation of suede, can be first rubbed with vegetable oil, after it is loose, then gently wipe with gauze or sterilized soft paper, it must be washed, with Sophora flavescens soup.
3, replace the external medication on time, and take the internal medicine on time.
4, when itching, avoid scratching, if necessary, soak some salt water, drip in the itching, its concentration can reach the standard of itching, such as children to prevent him from scratching.
5, during the illness, avoid alcohol, spicy food (such as green onions, garlic, leeks, peppers, pepper, mustard, snow red, ginger, curry), booty, freshwater products, seafood.
6, bathing, haircut, bath body, pay attention to prevent sewage into the body, before washing your hair, you can use a special rubber stopper or clean cotton ball to block the external auditory canal.
7. Swimming is forbidden after illness.
8, avoid all seafood fresh hair, mustard, mustard, snow red and other food.
Complication
Chronic otitis externa complications Complications
Chronic otitis externa often produces discomfort and itching in the ear, and a small amount of secretions, hearing will gradually decline, may lead to deafness.
Symptom
Chronic external auditory canal symptoms Common symptoms Hearing loss ear itch ear suffocation ear leak scaly skin hypertrophy
Chronic otitis externa is mainly characterized by ear itch, ear swell, ear leak, hearing loss, etc. It is a chronic or recurrent inflammation of the skin and subcutaneous tissue of the external auditory canal. In chronic cases, the skin of the external auditory canal is thickened and there is epithelial desquamation. Fungal presbyopia has blue smoke, black or yellow white mold, visible hyphae, and the skin is in contact with the skin. After removing it, it can be seen that the skin of the external auditory canal is congested and eroded. When there is a mixed infection of bacteria, the swelling of the congestion is aggravated.
Examine
Chronic otitis externa
1. Take the sputum secretion in the external auditory canal and add 10% sodium hydroxide or sodium sulfide in alcohol solution to dissolve. The smear is observed under a microscope, and the hyphae and round or ellipsoidal spores can be seen for diagnosis. However, in secretions with mixed infections; fungi are often not found.
2. The skin of the external auditory canal is thickened, desquamation, or suede adhesion. After avulsion, the skin of the external auditory canal is oozing. There may be a small amount of mucosal secretions, or white bean dregs secreted in the deep part of the external auditory canal.
Diagnosis
Diagnosis and diagnosis of chronic external auditory canal
Chronic external auditory canal symptoms are mainly ear discomfort and itching, often with a small amount of secretions, hearing loss slightly, external canal skin congestion or thickening, or covered with suede skin care a small amount of pus or debris. Sometimes peeling off the skin can cause bleeding, the tympanic membrane can be turbid, thickened, or damaged by the tympanic epithelium, with a small amount of granulation on its surface. It is also very easy to cause deafness and tinnitus.
