Narod SA. Tamoxifen ChemopreventionâEnd of the Road?. JAMA Oncol. 2015;1(8):1033â1034. doi:10.1001/jamaoncol.2015.2247. Download citation file:
About Rare Diseases. A rare disease is defined by the European Union as one that affects less than 5 in 10,000 of the general population. There are between 6,000 and 8,000 known rare diseases. Around five new rare diseases are described in medical literature each week.
Tay Sachs: Rare Types. Rare types of medical conditions and diseases in related medical categories: 1  Brain & Neurological Disorders: Rare Types: 2  Adult ADHD -- Rare Types. 3  ADHD -- Rare Types. 4  Alzheimer Disease -- Rare Types. 5  Migraine -- Rare Types. 6  Concentration Disorders -- Rare Types. 7  Stroke -- Rare Types. 8  Bipolar Disorder -- Rare Types.