Diabetic Foot Ulcers: When Is a Vascular Specialist Needed? Q: What is a diabetic foot ulcer? It is an open sore, usually on the sole or toes, that develops when skin breaks down and does not heal. Nerve damage hides the pain, so many people notice it late. Q: Why do these ulcers refuse to heal? Healing needs good blood flow. In diabetics, narrowed leg arteries often cut the supply, so oxygen and nutrients never reach the wound. Infection and constant pressure on the foot make things worse. Q: What warning signs should not be ignored? A wound that has not improved in two weeks. Black or dark skin around it, a foul smell, spreading redness or swelling. Cold, pale feet and pain at night also point to poor circulation. Q: When is a vascular specialist needed? As soon as a wound is slow to heal, or the foot feels cold and pulses are weak. A vascular specialist in Pune such as Dr. Santosh Patil can check whether blocked arteries are the real cause. Q: How is blood flow tested? Usually with a Doppler ultrasound and an ankle-brachial index. CT angiography may follow if a blockage is suspected. An interventional radiologist in Pune can choose the right test and mark the exact site of the narrowing. Have a foot wound that is not healing? Contact Dr. Santosh Patil for a prompt circulation check and a plan to protect your foot.