It would be an extremely rare disease for us not to have seen it before but no matter what the disease, the process is the same. In some cases having a rare disease is harder to win since the Social Security judge assigned to the case may not be familiar with it. But on the other side, specialists usually handle rare diseases. These specialists are uniquely qualified to discuss the implications of the disorder. The more specialized your doctor, the more weight his opinion will be given so in that sense rare diseases sometimes are easier to win than a common disorder.