Sign Up for a Free Account

This is an image preview.
Start a Free Account
to view the full image.

  • Nearly 3,000 illustrations, including video clips of neurologic disorders.

  • Every article is reviewed by our esteemed Editorial Board for accuracy and currency.

  • Full spectrum of neurology in 1,200 comprehensive articles.

  • Listen to MedLink on the go with Audio versions of each article.

Distinct gadolinium enhancement of the cervical spinal cord on T1-weighted sequences with cord swelling

Excessive yawning spells were a significant symptom of AQP4-IgG seropositive neuromyelitis optica spectrum disorder in this 67-year-old woman. (Source: Spahlinger V, Niessen A, Rauer S, Krämer S, Reinhard M. The big yawning: pathological yawning as a symptom of neuromyelitis optica spectrum disorders. Case Rep Neurol Med 2019;2019:9691863. Creative Commons Attribution License.)