My daughter is 14 and in 9th grade. Over the break she has not felt well. About 7 days ago she was in bed/couch for 2 days with no energy and a headache. She appeared to get better, but when she went to a work out she felt faint and came home early. She fell a asleep for a few hours. She continues to have low energy , sometimes a headache, and just yesterday she started having a red bumpy rash on her arms...
I would suggest some test and exam for your daughter. Weakness headache and rash are not normal. However, you didn't mentioned any fever. But still you should visit a doctor.Meanwhile, you should give her fluids and ORS to prevent deny Chat Doctor.