Vertigo and Deafness Associated With Hypothyroidism*†

Hypothyroid-associated sensorineuronal deafness

“…Controversy regarding the nature and location of the hearing defect mirrors the equally diverse opinions as to whether the hearing loss is reversible in acquired hypothyroidism. A number of authors report improvement in the hearing defect (at times in a dramatic fashion) on correction of the hypometabolic state akin to that which we describe [2,4,5] and yet others refute that any objective hearing improvement in this context actually occurs [3]. It is unsurprising with these aspects in mind that earlier literature is inconsistent regarding whether or not the severity of deafness is proportional to the degree of hypothyroidism.…”

“…The second case emerged 24 years after Bircher, when Kemp reported deafness in a 53-year-old hypothyroid lady which reversed with thyroid replacement [2]. This was followed by similar reports by Moehlig, Howarth and Lloyd and Friedman [3][4][5].…”

“…The second case emerged 24 years after Bircher, when Kemp reported deafness in a 53-year-old hypothyroid lady which reversed with thyroid replacement [2]. This was followed by similar reports by Moehlig, Howarth and Lloyd and Friedman [3][4][5].Despite a series of experimental studies in animals over the last century, there continues to remain a debate regarding the underlying pathophysiology and even if hypothyroid-associated deafness is a specific entity. …”

Is sensorineural hearing loss related with thyroid metabolism disorders

“…[20,21] Case studies by Moehlig, Howarth and Lloyd and Friedman are among the other publications on this issue. [22][23][24] The relation between hypothyroidism and hearing insufficiency gained acceptance for the 1 st time when the London Clinic Institution, Committee of Myxoedematous detected that 36 out of 69 hypothyroid patients had hearing loss. [20] Once it was accepted that there is a relationship between hypothyroidism and hearing loss, the location of the affected part in ear has been subject to many new studies which showed one or multiple parts such as endocochlear, retrocochlear or central hearing ways might be affected.…”

Prevalência de sintomas otoneurológicos em indivíduos com hipotireoidismo congênito: estudo piloto

“…Porém, é válido ressaltar que, pelo fato de os sujeitos da pesquisa já estarem em terapia de reposição hormonal, os sintomas mais pronunciados do zumbido podem não estar presentes. O zumbido no hipotireoidismo deve ser observado como um "sinal de alerta" para outra patologia de base 27 , como edema na tuba auditiva 17 , aumento da pressão no ouvido interno 10 e danos no sistema eferente. Porém, essa frequência pode estar subestimada, dada a dificuldade de o público pediátrico definir corretamente a sua percepção de zumbido aos pais.…”