A mild or moderate sprain will be slightly painful and swell some.
To treat a mild or moderate sprain, apply a cold compress if available, wrap the joint with elastic bandage and elevate the affected area. A
n anti-imflammatory like Ibuprofen will help reduce the swelling.
A more severe sprain will swell substantially, be very painful and discolored, a purple-blue color.
Severe sprains require professional assistance, thus seek medical help.