presciption drugs , crutches
There are many causes of pain in the foot. Pain in the foot can be a result of an injury such as a sprain, fracture or broken bone. If your foot pain persists you should seek advice from a medical professional.
It depends how much pain is "a lot." Different people have different tolerances for pain. However, if you break any bone in your foot, is will feel worse under pressure when standing. It is not recommended to stand with a fractured bone in your foot.
Sorry to hear that you are having issues with your foot. If you haven't already gone to the doctor, you should probably do that. While you are home, you should have your foot elevated and have ice on it. You should probably stop dancing for a little bit, at least until the pain subsides.
Pain can be caused by many different things, but in this case I would suspect a hairline bone fracture.
Open fracture
Bone spurs are one cause of foot pain. They are in the heel and are calcuim deposits at the end of the bone.
Pain, swelling, unbearable pain while pressure is applied.
While most foot fractures are painful, you can't use pain as a diagnostic to prove a fracture. Unless you can see deformity of the bone, or you're unlucky enough to suffer a compound fractor (where the bone protrudes through the skin), pain alone is not the gold standard for diagnosing a fracture. I've frequently heard people tell me that sprains and serious contusions actually caused them more pain than a fracture in tyhe approximate area. This is even moreso the case in that treatment for an injury may be identical, be it a bad sprain or a simple fracture. Likewise, you can indeed palpate a deformity of the bone resulant from a fracture without it resulting in serious pain. The only problem is that the bump you're feeling may or may not be a fracture. The only way to tell for certain if it's a fracture is either imagery (x-ray, CT Scan, MRI and the like), or intrusive measures like surgery, which are in almost every case counterindicated. In summary, the answer to your problem is Yes, but you can't really tell if what you're feeling is a fracture.
A compound fracture? is the bone in of out of the skin? has he fallen recently? It sounds like a closed fracture you should probably get him an x-ray
Some signs of a fractured bone include swelling, bruising, deformity, pain, and loss of function. If it is an open fracture, the bone might be seen protruding from the skin.
It is very possible that the two are related. If there is a fracture or slight break in your foot then the pain could be felt on both the top and the bottom of your foot/feet.
a "compound fracture" or open fracture