MedGen

A rare pulmonary disease induced by SARS-CoV coronavirus infection, with a reported incubation period varying from 2 to 7 days. Patients present flu-like symptoms, including fever, malaise, myalgia, headache, diarrhoea, and rigors. Dry, nonproductive, cough and dyspnea are frequently reported. Severe cases evolve rapidly, progressing to respiratory distress and failure, requiring intensive care. Mortality rate is 10%. The disease appeared in 2002 in southern China, subsequently spreading in 2003 to 26 countries. Reported human-to-human transmission occurred in Toronto (Canada), Hong Kong Special Administrative Region of China, Chinese Taipei, Singapore, and Hanoi (Viet Nam). [from ORDO]

Ebola hemorrhagic fever (EHF), caused by Ebola virus, is a severe viral hemorrhagic disease characterized by initial fever and malaise followed by gastrointestinal symptoms, bleeding, shock, and multi-organ system failure. [from ORDO]

A form of potassium-aggravated myotonia which shows dramatic improvement with the use of acetazolamide. Symptoms generally manifest during childhood (before 10 years old), with myotonia of the facial, limbs and/or intercostal muscles that is triggered by potassium ingestion, fasting and mildly by cold exposure and exercise. Muscle stiffness is generally painful. Acetazolamide-responsive myotonia is a sodium muscle channelopathy due to missense mutations of the SCN4A gene, encoding the alpha subunit of the skeletal muscle voltage-gated sodium channel Nav1.4. Transmission is autosomal dominant. [from SNOMEDCT_US]

The Kleine-Levin hibernation syndrome, a rare disorder that occurs predominantly in males, is characterized by episodic attacks of aberrant behavior, hypersomnia, and increased feeding (megaphagia) and sex drives (Kleine, 1925; Levin, 1929). [from OMIM]