Red, swollen and itchy ears accompanied by fever may be caused by a variety of pathological factors, including allergies, external auditory canal eczema, otitis externa and other diseases.
1. Allergy: When the ear is exposed to common allergenic substances such as pollen and willow flakes or stimulated by small flying insects, an allergic reaction occurs, and the mast cells of the skin and mucous membranes are activated to produce immunoglobulins and a large number of inflammatory mediators, which leads to redness, swelling, and fever in the ear, accompanied by itchy sensation.
2. Eczema of the external auditory canal: due to factors such as low immunity, endocrine disorders, mental stress, temperature change and sun exposure, the skin of the external ear produces scattered or coarse pimples, accompanied by symptoms such as flaking and itching.
3. Inflammation of the external auditory canal: due to the infection of the external ear with bacteria, fungi, viruses and other pathogens, resulting in the external ear skin mucosa congestion, edema, capillary dilation, resulting in redness, swelling, hot and itchy, and even pus and painful symptoms.
If the symptoms are serious or persistently difficult to relieve, it is recommended to consult a doctor as soon as possible to avoid delaying the condition.