Thickened earlobes-conductive deafness syndrome

Thickened earlobes-conductive deafness syndrome, also known as Escher-Hirt syndrome, or Schweitzer Kemink Graham syndrome, is a rare genetic disorder which is characterized by ear and jaw abnormalities associated with progressive hearing loss. Two families worldwide have been described with the disorder.

Presentation
People with the disorder often have the following symptoms:

Ear/Auditory

 * Microtia (abnormally small ears)
 * Thick earlobes
 * Conductive hearing loss
 * Congenital auditory ossicle anomalies

Jaw

 * Micrognathia

Etiology
Escher et al. described a family with dominantly inherited conductive deafness caused by ear anomalies in 1968 and Wilmot et al. described another family with the same symptoms and mode of inheritance in 1970, Schweitzer et al described the symptoms and declared a novel syndrome in 1984.