Ellen D. Andersen

Ellen Damgaard Andersen (1939 – ) Danish physician.

In 1971, Andersen and her colleagues (Peter Krasilnikoff and Hans Overad) published the case of an 8-year-old child who suffered episodes of paralysis, extrasystoles and characteristic developmental abnormalities (low set ears, hypertelorism, mandibular hypoplasia, broad root of nose, clinodactyly). The disorder known as Andersen syndrome or Andersen-Tawil syndrome.

  • Born 10 July 1939
  • University Hospital of Copenhagen, Copenhagen, Denmark

Medical Eponyms
Andersen Syndrome (1971)

Autosomal dominant trait with clinical manifestations including potassium sensitive periodic paralysis, prolongation of the QT interval, ventricular arrhythmias, and characteristic physical features including low-set ears, micrognathia, and clinodactyly. [OMIM #170390]

[aka *Andersen-Tawil syndrome (ATS); long QT syndrome 7; Andersen cardiodysrhythmic periodic paralysis]

1971 – Andersen et al reported the case of an 8-year-old boy with short of stature, hypertelorism, broad nasal root, mandibular hypoplasia, scaphocephaly, and clinodactyly V, as well as a defect of the soft and hard palate.

1994 – Tawil et al used the designation Andersen syndrome for the clinical triad of potassium-sensitive periodic paralysis, ventricular ectopy, and dysmorphic features. They found reports of 10 patients and added 4 new patients in 3 kindreds. All the patients had potassium-sensitive periodic paralysis without myotonia indistinguishable from other forms of hyperkalemic periodic paralysis. Tawil emphasized the variability of both the dysmorphic features and the cardiac manifestations.

Major Publications





the person behind the name

Graduated from Cardiff Medical School in 2017 with MBBCh and BSc in Psychology and Medicine. Currently working as a doctor in the emergency department at Sir Charles Gairdner Hospital in Perth, Australia.

Emergency physician MA (Oxon) MBChB (Edin) FACEM FFSEM with a passion for rugby; medical history; medical education; and asynchronous learning #FOAMed evangelist. Co-founder and CTO of Life in the Fast lane | Eponyms | Books | Twitter |

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