Our patient education library supplies information on diseases, disorders, and treatments of the head and neck, most commonly the ears, nose and throat.
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Tinnitus
...Hypertension or high blood pressure, thyroid problems, and chronic brain syndromes can all cause tinnitus without any specific auditory problems...

Hoarseness: Insight into voice changes
... Other Causes: These include allergies, thyroid problems, trauma to the voice box, and, occasionally, menstruation...

Thyroid Disorders and Surgery
...The most common thyroid problems are: An overactive gland, called hyperthyroidism (e...