Science, Maths & Technology
Rare diseases: low numbers, high impact
...classed as rare diseases, despite being far more well known. How many rare diseases are known? At the time of writing, around 7,000 rare diseases have been described. Over 80% of those affect less than 1 in 1 million people (so they are very rare). However, new rare diseases are constantly being described, so this number is continuously increasing. In the UK, around 3.5...