Why is my left ear hot and my right ear cold?

Left ear hot and right ear cold may be caused by differences in local blood circulation, environmental temperature stimulation, external otitis, middle ear infection, or ear nerve dysfunction. This condition can be improved by adjusting posture, keeping warm, and medical treatment. If accompanied by pain, pus discharge, or hearing loss, prompt medical attention is required.

1. Local Circulation Differences: Pressure on one side of the ear or poor posture may lead to faster blood circulation in the left ear and slower circulation in the right, causing a sensation of temperature difference without other discomfort. It is recommended to adjust sitting and sleeping postures to avoid pressing on one ear, and gently massage the right ear to promote blood flow.

2. Environmental Temperature Stimulation: The left ear exposed for long periods to sunlight or near a heat source while the right remains in a cooler area can create uneven temperatures, possibly with mild redness of the skin. Avoid prolonged direct sun exposure or heat on one ear, and adjust protection according to ambient temperature.

3. External Otitis: Bacterial infection causing inflammation in the left external auditory canal leads to localized congestion and warmth, while the right ear remains normal, often accompanied by pain and itching in the left ear. Under doctor's guidance, medications such as ofloxacin ear drops, cefaclor dispersible tablets, or erythromycin ointment may be used to relieve symptoms.

4. Middle Ear Infection (Otitis Media): Viral or bacterial infection in the left middle ear causes inflammation and a feeling of heat, while the right ear remains unaffected and at normal temperature. Symptoms may include left-sided ear pain, tinnitus, and muffled hearing. Under medical supervision, medications such as amoxicillin-clavulanate potassium tablets, phenol glycerin ear drops, or Biyan Tongqiao Granules may help alleviate symptoms.

5. Ear Nerve Dysfunction: Stress or irregular sleep patterns may disrupt nerve regulation in the ear. Increased neural activity on the left side can cause blood vessel dilation and warmth, while the right side remains normal, possibly accompanied by numbness. As directed by a physician, medications such as mecobalamin tablets, vitamin B1 tablets, or glutathione tablets may help reduce discomfort.

Maintain ear hygiene and avoid frequent ear picking, regulate sleep schedules and emotional well-being, eat a light diet avoiding spicy and irritating foods, and protect ears appropriately based on environmental temperature to support recovery.