of the joints
What is a Sprain?
A sprain is the stretching or tearing of ligaments. It is can be caused by not stretching before exercise, falling on a joint, or even just walking/running on a joint wrong.
How to notice a sprain?
you can usually tell if you have a sprain because there is usually bruising and swelling, stiffness, and it will hurt, either to walk on or just in general.
Taking care of a sprain.
In order for a sprain to heal, you have to stay off of it. If you walk on it too much, you can tear it more than it already is, and if it's pulled, you could tear it. If you do decided to walk on it, make sure you wrap it up for extra support. You will want to ice it for 20 minutes 4 or 5 times a day, depending on how bad it is, and when you ice it, you will want to keep the sprain elevated to reduce swelling.
If it worsens.
At first, if you feel like you may have a sprain, i would NOT go to the hospital. They are going to tell you to ice it, give you a wrap, and charge you more than you can afford, so instead i would just continue to follow the procedure above, and if after a week there is little to no improvement on the condition, then go see a doctor, it might be broken.