Neurally Derived Wounds

Neurally Derived Wounds

Neurally derived wounds are chronic wounds that develop due to damage or dysfunction in the nervous system. These wounds typically occur when patients have lost the ability to feel pain, pressure, or discomfort in certain parts of their body, most often due to spinal cord injuries or diseases that cause peripheral nerve damage. Because the normal sensory warning system is impaired or absent, the skin becomes highly vulnerable to injury, and those injuries may go unnoticed and untreated, leading to chronic ulcers or infections.

Spinal Cord Injury-Associated Ulcers

What are Spinal Cord Injury-Associated Ulcers?

These ulcers are commonly referred to as pressure injuries or pressure ulcers. They are wounds that develop in individuals with spinal cord injuries, particularly in areas of the body that are under constant pressure,such as the buttocks, heels, or back, due to immobility and lack of sensation.

How Does the Wound Happen?

When a person has a spinal cord injury, they often lose the ability to feel sensations below the site of injury. This loss of sensation means they may not realize when a part of their body is under continuous pressure or friction, such as when lying or sitting in the same position for long periods. Constant pressure reduces blood flow to the skin and underlying tissue, leading to oxygen deprivation and, eventually, tissue breakdown. Over time, this can result in an open wound or ulcer that is slow to heal.

What Happens If Not Treated?

• Wound deepens and spreads: Without pressure relief and wound care, the injury can extend beyond the skin into muscles, tendons, or bones, becoming more complex and difficult to treat.
• High risk of infection: Bacteria can easily enter through the broken skin, leading to local infections or more severe issues like cellulitis, osteomyelitis (bone infection), or abscesses.
• Sepsis and life-threatening complications: In severe cases, infection may enter the bloodstream, causing sepsis, a potentially fatal condition that requires emergency treatment.
• Chronic wound recurrence: Even if the wound heals once, failure to address the root causes, such as immobility or poor skin care, can lead to repeated ulcers in the same area.
• Loss of independence: Advanced ulcers may limit the patient’s ability to sit, transfer, or participate in daily activities, increasing dependence on caregivers.

Leprosy-Related Neuropathic Ulcers

What are Leprosy-Related Neuropathic Ulcers?

These ulcers occur in individuals affected by leprosy (Hansen’s disease), caused by the bacterium Mycobacterium leprae. One of the hallmark symptoms of leprosy is peripheral nerve damage, which results in a loss of pain and temperature sensation, especially in the hands, feet, and face. As a result, people with leprosy are prone to injuries that can develop into chronic neuropathic ulcers.

How Does the Wound Happen?

Due to nerve damage, a person with leprosy may not feel cuts, burns, or repetitive pressure in areas like the soles of the feet or palms of the hands. Simple activities such as walking barefoot or handling rough materials can cause minor skin trauma. Because there is no pain signal to alert the individual, these injuries are not treated or protected. Over time, repeated trauma causes the skin and deeper tissues to break down, resulting in ulcers.

What Happens If Not Treated?

• Chronic, non-healing wounds: Without proper wound care and protective measures, these ulcers persist and fail to heal, becoming a continuous source of damage and infection.
• Severe infections: The open wounds can easily become infected, especially in resource-limited settings. If not managed early, infections may reach deeper tissues or bones.
• Tissue and bone loss: Recurrent and neglected ulcers may result in the loss of soft tissue or bone, leading to deformities, shortened digits, or loss of function in the affected area.
• Permanent disability: Continued trauma and infection can lead to visible deformities and severe disability, often affecting the person’s ability to walk, use their hands, or care for themselves.
• Social stigma and isolation: In many parts of the world, leprosy-related wounds are still associated with stigma. The visible ulcers and deformities can cause emotional distress and social exclusion.