The most common symptom or sign of having plantar fasciitis is a stabbing pain in the bottom of your foot while walking or running, or first thing in the morning upon waking up. It is usually not a dull pain, but rather, very sharp and leave your whole foot feeling stiff. It is important to note that if you are experiencing intense foot pain in the evenings or at night, it is likely NOT plantar fasciitis but perhaps arthritis or some form of nerve problem.