diffuse otitis externa
Introduction
Introduction to diffuse otitis externa External auditory canal can be divided into two categories, one is localized otitis externa, also known as furuncleofextrnalauditorycanal; the other is diffuse inflammation of the external auditory canal skin, also known as diffuse otitis externa (diffuseotitis externa). When the external auditory canal is severe, the ear pain is severe. When the chewing mouth is chewed, it can be aggravated and can be radiated to the same side of the head. It is more common body discomfort, and the body temperature may be slightly increased. When the swelling is severely blocked, the ear canal and hearing loss may be detected. Traction pain and tragus tenderness, the external auditory canal cartilage skin has localized redness and swelling, red and swollen mature rupture, the external ear canal accumulates out of the ear, at this time the ear pain is relieved, the posterior wall of the external auditory canal is severely swollen, the ear canal and milk can be Redness of the sudden area, should pay attention to the identification of acute mastoiditis, acute papillitis patients have a history of acute or chronic suppurative otitis media, fever is more obvious, no auricular traction pain, but there is tenderness of the mastoid; there is tympanic membrane perforation or The tympanic membrane is obviously congested and has more pus. basic knowledge The proportion of illness: 0.005% Susceptible people: no special people Mode of infection: non-infectious Complications: external ear canal fungal necrotic otitis externa
Cause
Diffuse otitis of the ear canal
External ear canal skin trauma (55%):
When the local resistance is reduced, it is easy to develop, such as earing, swimming into the water, stimulation of long-term pus in suppurative otitis media, etc.
Low resistance (35%):
Allergic constitution and diabetics are prone to recurrent episodes or low immunity, and the common pathogens are Staphylococcus aureus, Streptococcus, Pseudomonas aeruginosa and Proteus.
Prevention
Diffuse otitis externa prevention
(1) Pay attention to ear hygiene. If the affected area is wet and heavy, and the pus is soaked, it should be made dry. If the blood is weak and dry, it is advisable to use ointment to moisturize it.
(2) During the illness, avoid spicy food, fragrant food, fish, shrimp and other foods.
Complication
Diffuse otitis externa complications Complications, external ear canal fungal disease, necrotizing otitis externa
In severe cases, the external auditory canal is obviously swollen and painful. Even the external auditory canal is narrow or interlocking. The external auditory canal discharges serous secretions. It can be swollen around the auricle. Sometimes the lymph nodes around the ear are swollen, tender, and the tympanic membrane is congested.
Symptom
Diffuse external auditory canal symptoms Common symptoms Congestive tinnitus, ear pain, hearing loss, edema, external auditory canal stenosis, mastoiditis
When the external auditory canal is severe, the ear pain is severe. When the chewing mouth is chewed, it can be aggravated and can be radiated to the same side of the head. It is more common body discomfort, and the body temperature may be slightly increased. When the swelling is severely blocked, the ear canal and hearing loss may be detected. Traction pain and tragus tenderness, the external auditory canal cartilage skin has localized redness and swelling, red and swollen mature rupture, the external ear canal accumulates out of the ear, at this time the ear pain is relieved, the posterior wall of the external auditory canal is severely swollen, the ear canal and milk can be Redness of the sudden area, should pay attention to the identification of acute mastoiditis, acute papillitis patients have a history of acute or chronic suppurative otitis media, fever is more obvious, no auricular traction pain, but there is tenderness of the mastoid; there is tympanic membrane perforation or The tympanic membrane is obviously congested and has more pus.
Diffuse otitis externa is characterized by earache, discharge of secretions, examination of auricular traction pain and tragus tenderness, diffuse redness of the external auditory canal, accumulation of secretions on the wall of the external auditory canal, narrowing of the external auditory canal, and periorbital circumference Lymph node swelling and pain, chronic ear itching, a small amount of exudate, thickening of the external auditory canal skin, chapped, desquamation, secretion accumulation, and even the narrowing of the external auditory canal.
Examine
Diffuse otitis externa examination
The external auditory canal examination has auricular traction pain and otoscope tenderness. The external auditory canal cartilage skin has localized redness and swelling. The posterior wall of the external auditory canal is swollen and severe. The posterior sulcus and mastoid area can be red and swollen. The diffuse otitis externa examination also has auricle Pain and otoscope tenderness, diffuse redness of the external auditory canal, accumulation of secretions on the wall of the external auditory canal, narrowing of the external auditory canal, swelling of the periorbital lymph nodes, thickening of the external auditory canal, chapped, desquamation, accumulation of secretions, and even external auditory canal narrow.
Diagnosis
Diagnosis and diagnosis of diffuse otitis externa
It should be differentiated from external ear eczema or drug dermatitis. The disease is generally free of earache, has papules or blisters, and has a large amount of watery secretions and itching. It should also be differentiated from external ear canal mycosis and suppurative otitis media.
