Auditory hallucinations of peripheral origin are commonly regarded as rare. In recent times they have, however, been more and more frequently recognised. They fall into two groups, one in which the origin is a pathological process in the peripheral sensory organ, and another in which the stimulus is mechanical, electric, acoustic, or other. Hudovernig has lately met with a case of the latter kind at Budapest. The patient was a youth æt. 18, sane, but with highly neuropathic heredity on both sides. For some time he had heard a murmuring sound in his ears, and to this was sometimes superadded a human voice which repeated aloud his own thoughts as they arose. This very much worried the patient, prevented him from applying himself to reading though he is studiously inclined, and sometimes kept him awake at night. Patient had never had any ear troubles, was robust and welldeveloped, though there were numerous stigmata of degeneration, also tremors of the smaller muscles and increased patellar reflex. A minute psychic exploration revealed nothing abnormal except the hallucinations. For a week past these had increased in intensity and become more pronounced on the left side. Examination of the ears by a specialist revealed a large amount of wax in the left auditory meatus, and a hard plug of cotton-wool pressed against the tympanum. The patient was able to account for the presence of the plug. When removed the hallucinations at once notably decreased in intensity and soon ceased; a faint murmur continued for a time but that also disappeared before long. Hudovering concludes that the hallucinations could only have been produced by the plug acting as a constant irritant and setting up activity in a neurasthenic and abnormally sensitive cortex.
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