<human>: Hi reddit!

I recently called my little sister (only 14 years old) to find that she's experiencing a bunch of health issues. Her symptoms include joint pain, chest pain, difficulty breathing, short term memory loss, and difficulty concentrating in school. She also gets rashes when she goes outside sometimes. 

I'm in college and don't live at home so I only found this out today. I asked her a bunch of questions, and she said that these symptoms have been around since January but were MUCH more mild. I AM VERY VERY WORRIED. 

She has seen a bunch of doctors (cardiologist, dermatologist, therapist etc). They ran a bunch of tests which won't be ready for a couple days. Until I find out what's going on with her, I am probably going to let this freak me out. I can't stop thinking about it. 

I'm not looking for a diagnosis, just some comfort on this situation. Should I be worrying so much?? Any stores of anyone experiencing similar symptoms...PLEASE SHARE. 

Thank you guys

Can you provide a brief overview of the text?
<bot>: little sister is experiencing some weird symptoms (joint pain, chest pain, memory loss)...how can I cope with this?