Characterized by a 'punched-out' appearance, severe pain, location on distal points (toes), and signs of ischemia like absent pulses and pallor.
Presents as an atrophic, waxy, yellow-brown plaque with prominent telangiectasias, not an open ulcer, though it can ulcerate with trauma.
Typically located on pressure points of a numb foot, is often painless, and is surrounded by a thick callus.
A rapidly expanding, extremely painful ulcer with a characteristic irregular, violaceous, undermined border.
