Sunspots are temporary phenomena on the photosphere of the Sun that appear visibly as dark spots compared to surrounding regions. They correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.
Tingling, pins and needles, paresthesia anxiety symptoms feelings anywhere on or in the body. You feel: A tingling sensation anywhere on or in the body, including the hands, feet, fingers, toes, head, face, arms, chest, back, groin, mouth, etc.
In general, the tingling sensation in your feet could represent a neuropathy--which is defined as damage to the nerve. Neuropathy can have many causes--the first thing to rule out is nerve impingement.