Why does cleaning earwax cause a feeling of nausea?

A sensation of nausea during ear canal cleaning may be caused by physiological factors or pathological conditions, such as external otitis or external auditory canal eczema, which require targeted treatment.

I. Physiological Factors

The nerves in the ear and those in the throat region belong to the same nerve group—branches of the vagus nerve. When local nerves are stimulated, it may trigger a feeling of nausea while cleaning the ear canal. During ear cleaning, avoid applying excessive force and use cotton-tipped tools.

II. Pathological Factors

1. External Otitis

External otitis may occur when water enters the ear or when resistance of the ear canal skin decreases, allowing bacteria to multiply rapidly. Increased sensitivity of the skin inside the ear canal can lead to intensified pain during cleaning. Inflammatory stimulation may also spread to the pharyngeal mucosa, resulting in a sensation of nausea. Treatment may include medications such as hydrocortisone neomycin ear drops, ofloxacin eye drops, or levofloxacin hydrochloride ear drops, used under medical supervision.

2. External Auditory Canal Eczema

External auditory canal eczema may result from infection or allergic reactions, causing hypersensitivity reactions in the soft tissues, leading to congestion and fluid exudation. Cleaning the ear canal may touch affected areas, causing pain; excessive pressure might further stimulate the throat area, thereby inducing nausea. Treatments may include topical applications of zinc oxide paste, boric acid-zinc oxide paste, or compound acetic acid dexamethasone cream, as directed by a physician.

In addition, Ménière's disease may also cause nausea during ear canal cleaning. If discomfort occurs in the ear, it is recommended to seek timely medical evaluation and treatment at a hospital.