On Audiometric testing: 1) Otoscopy: Reddish hue on tympanic membrane called " schwartz sign" .
1）耳镜检查：鼓膜呈红色，称为“施瓦茨症”。
英语百科
Schwartz sign
Schwartz sign also known as Flemingo's pink sign, is a diagnostic indicator for otosclerosis, a disease of the bones of the middle or inner ear.
In clinical examination of the ear drum, increased vascularity of the promontory may be seen through the ear drum. This sign is known as Flemingo's flush sign or Schwartz's sign. This indicates otospongiosis (active otosclerosis).