Using social media platforms like Twitter and Facebook can be beneficial for helping people to exchange knowledge with rare medical diseases and build communities says a new study. According to researchers people often seek medical knowledge from social media platforms rather than traditional medical sources to find information on and discuss health issues -- particularly where patient experiences and medical advice are both equally valued. This project shows the potential of online communication tools for isolated patient communities and the extent to which patients' experiential knowledge is becoming a point of reference for other patients together with - or sometimes