I've got a rare genetic condition (Ehlers Danlos Syndrome) that causes crazy flexible joints, frequent dislocations, and a bunch of other not fun and crazy stuff, AMA!
I suffer from Ehlers-Danlos Syndrome (EDS) which effects 1 in 5,000 to 1 in 20,000 people. EDS is a genetic mutation that screws up collagen (the most abundant protein in the human body) production. There is no cure for EDS as of yet, only treatments for the symptoms it causes. I was diagnosed when I was 16 and I weighed 100 lbs soaking wet (I'm 6ft tall), I looked like a skeleton. I was so malnourished and sick I didn't even register in the height-weight chart. (EDS can also cause a bunch of stomach problems, heart problems, basically anything can go wrong, I've been lucky to avoid some of the most severe things) I'm 19 years old now, and I've had just about every joint dislocation you can think of, in addition to a bunch of other (usually very painful) health issues. I'm much healthier now, but the condition is chronic and I still struggle with it everyday. as a former athlete who had to stop due to my disorder, I still remain very active, and have found other passions in my life that I pursue.
TLDR: My joints are crazy due to a rare genetic disorder, and due to that and other health problems it creates, it makes my daily life pretty weird. Ask me Anything!
Proof from a severe injury: https://imgur.com/a/peVSE (I was 14 at the time of the photographs)