Ingrown toenails manifest when the edges or corners of a nail mature into the skin next to it, triggering tenderness, redness, and perhaps bleeding. Myelin: This can be a skinny layer composed of fatty chemical compounds. Myelin surrounds the axon of many neurons and acts as being a protecting covering. https://www.theorthopaedicandpainpractice.com/foot-nerve-pain-treatment-comprehensive-guide-to-foot-pain-relief/