As a quick reminder, the different categories of insulin are: 1  Rapid-acting. 2  Short-acting (regular). 3  Intermediate-acting. 4  Long-acting.
This condition may also affect people with kidney problems, as a loss of protein in the urine can cause feet to swell. Another cause of foot swelling is inactivity ... in a car or riding on an airplane all day, your leg muscles aren't working as much, and fluid will pool in your feet and legs ...
Inflammation of the plantar fascia can also cause this pain -- normally at the bottom of the heel. Known as plantar fascitis this can cause your symptoms. Both of these occur due to overuse of the foot, often with an abnormal foot arch. Often, shoe inserts or orthotics are needed.