My daughter was sitting on sofa and all of a sudden had severe pain in the top of her left foot. She was afraid for me to touch it, after a while I felt it suspecting a charlie horse, but that didn't appear to be the problem. It was ok if she didn't move it, but to try to flex her foot would cause pain on top. After giving Ibuprofen and having her rest it, it seems to be even worse after waking today. She has a lot of discomfort walking on it, no apparent bruising, but possibly some swelling, as there appears to be a slight indented line in the center of her foot going up to where foot and leg meet. She has history of osteochondroma (bone/cartilage tumors) but has never had problems in this area. Could it be sprain, ligament, tendon, or something more serious. Ice has not helped, nor soaking in warm tub of epsom salt. Any ideas. Does it warrant ER visit, or try to follow-up with her ortho, who is really hard to get into see. Any advise appreciated.