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Blog

Warning Sign of Vascular Disease: Foot Ulcer That Won’t Heal

Posted August 15, 2023
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Early detection of foot ulcers is paramount to mitigating the effects of this condition, making it essential to recognize warning signs of vascular disease of the feet to obtain prompt diagnosis. Foot sores that won't heal are one such sign – that cannot be mistaken as easily for other health conditions like arthritis or diabetes. 

Foot ulcers or sores that will not heal are a concerning sign and can be indicative of various underlying diseases or conditions. Some of the common conditions associated with non-healing foot ulcer include:

Diabetes - Diabetic foot ulcers are one of the most common causes of non-healing foot ulcers. Diabetes can lead to nerve damage (neuropathy) and reduced blood flow (peripheral artery disease), both of which impair the body's ability to heal wounds.

Peripheral Artery Disease (PAD) -  PAD is a condition characterized by narrowed arteries, leading to reduced blood flow to the legs and feet. Poor circulation can result in slow wound healing and contribute to non-healing foot ulcers.

Peripheral Neuropathy -  Nerve damage in the feet, often associated with conditions like diabetes, can cause loss of sensation. Patients may not feel injuries or pressure points, leading to the development of foot ulcers that can be challenging to heal.

Venous Insufficiency - This condition occurs when the veins in the legs have difficulty returning blood to the heart, leading to swelling and skin changes. Ulcers may form, especially around the ankles, and can be slow to heal.

Infection - Foot ulcers that become infected can impede the healing process and lead to non-healing ulcers. Infections may occur in individuals with compromised immune systems or those with poor wound care practices.

Rheumatoid Arthritis -  Inflammation associated with rheumatoid arthritis can lead to the development of foot ulcers, particularly over pressure points.

Peripheral Vasculitis -  This is an inflammation of the blood vessels that can affect the feet, leading to ulcer formation.

Skin Conditions - Certain skin disorders, such as pyoderma gangrenosum or bullous pemphigoid, can cause chronic foot ulcers that are challenging to heal.

Cancer -  In rare cases, non-healing foot ulcers may be a sign of skin cancer, particularly if they do not respond to standard wound care.

Understanding Vascular Disease

Vascular disease refers to conditions that adversely affect your blood vessels – the arteries and veins that carry blood throughout your body. 

Several factors can lead to pathogenesis of these diseases, including atherosclerosis (hardening of the arteries), infection, inflammation, or injury (physical trauma). The resulting damage or blockage in the blood vessels can lead to insufficient blood flow to specific body parts – often the lower extremities, such as the legs and feet. 

Vascular disease can also cause clot formation or pulmonary embolism, potentially leading to life-threatening situations like stroke or heart attack. 

Moreover, insufficient blood flow due to vascular disease can make it difficult for the body to fight infection, making the affected individuals more susceptible to sepsis or gangrene, especially when there's a non-healing wound.

Two common vascular diseases affecting the lower extremities are peripheral artery disease (PAD) and diabetic foot ulcers. 

PAD occurs when the peripheral arteries, often those supplying the legs, become narrow or blocked. Diabetic foot ulcers, on the other hand, are ulcers that develop on the feet of people with diabetes, often due to poor circulation and nerve damage. While similar, PAD is a strong indicator of vascular disease. Conversely, diabetes is a known  risk factor. 

Foot Ulcers and Vascular Disease

There is a significant correlation between foot ulcers that won’t heal and vascular disease. 

The body relies on proper blood circulation to heal wounds. Blood supplies the necessary oxygen and nutrients that aid in the repair process, making it essential for wound healing.

However, impaired blood flow to the lower extremities can hamper healing in people with vascular disease. If there is a small or large hole or ulcer on the foot, insufficient blood supply can prevent the wound from healing, leading to chronic, non-healing foot ulcers.

These ulcers, over time, may deepen, expanding to underlying tissues and bones. They can also become infected, adding to the complexity of the situation. 

Recognizing Foot Ulcer That Won't Heal

Foot ulcers that don't heal could indicate a potential vascular issue. Despite conventional wound care, there can be small or large holes on the bottom of the foot that remain open and unhealed for an extended period. 

In addition to the non-healing nature of these ulcers, other symptoms may accompany them. These may include pain, discoloration of the skin around the wound, or numbness in the foot. If you observe any of these symptoms, seeking medical attention promptly to evaluate the potential presence of vascular disease is critical.

Conclusion

Recognizing the warning signs of vascular disease, such as foot ulcers that won’t heal, is vital for the early detection and foot ulcer treatment options. These diseases can lead to severe complications, including limb amputation if left untreated. 

Therefore, if you have a small or large hole in the bottom of your foot that isn't healing, it's important to consult a healthcare professional immediately to evaluate your vascular health. Timely treatment can improve outcomes and the prognosis for individuals with vascular disease.

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Dr. Sanjiv Lakhanpal

Dr. Sanjiv Lakhanpal

Dr. Sanjiv Lakhanpal published in several medical research journals through the Lakhanpal Vein Foundation to help educate and raise awareness for vascular disease. He has been practicing medicine for 25 years, and is the founder of The Center for Vascular Medicine.

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