A Kennedy ulcer is a skin wound that develops in some people as part of the dying process. Unlike ordinary bedsores, which result from prolonged pressure and can usually be prevented with good care, a Kennedy ulcer appears even when caregivers are doing everything right. It signals that the body’s organs, including the skin, are shutting down. The wound cannot be healed, and its appearance often indicates that death is days to weeks away.
How a Kennedy Ulcer Differs From a Bedsore
Most people have heard of pressure injuries, commonly called bedsores. These form when skin stays in contact with a surface like a mattress for too long, cutting off blood flow. With regular repositioning, good nutrition, and proper skin care, bedsores are largely preventable and often heal with treatment.
A Kennedy ulcer looks similar on the surface but behaves very differently. It appears suddenly in someone who is already receiving appropriate skin care. It doesn’t respond to wound-healing treatments. The key distinction is that a Kennedy ulcer is not a failure of caregiving. It’s a sign that the skin itself is failing as an organ, the same way the kidneys, liver, or heart can fail at the end of life. In a dying person, even the slightest amount of pressure that would cause no harm in a healthy individual can trigger major skin breakdown.
The Centers for Medicare and Medicaid Services (CMS), which oversees long-term care facilities in the United States, classifies Kennedy ulcers as pressure ulcers that occur at the end of life and recognizes them as unavoidable. This classification matters because it means caregivers and nursing homes are not held liable for a wound that no amount of prevention could have stopped.
What It Looks Like
Kennedy ulcers most commonly appear on the sacrum or coccyx, the bony area at the base of the spine just above the buttocks. They can appear elsewhere, but the lower back and buttocks are the most typical locations. The wound often has a pear or butterfly shape and can range in color from red and purple to yellow or black as it progresses.
One of the most striking features is how fast it develops. A pattern sometimes called the “3:30 Syndrome” describes cases where a patient’s skin looks completely normal during a morning check, but by mid-afternoon a visible wound has appeared and is already progressing. In these rapid-onset cases, life expectancy after the wound appears has been observed at roughly 8 to 24 hours.
Two Patterns of Appearance
The original clinical description, published in 1989 by nurse Karen Lou Kennedy, identified two distinct presentations. The first involves wounds appearing on both buttocks. This bilateral pattern tends to have a longer timeline, with death following anywhere from two weeks to several months later.
The second is a single wound on one buttock, which carries a much shorter timeline. Death in these cases typically follows within 24 to 48 hours. With this presentation, the skin damage often remains a closed ulcer, meaning the wound stays beneath the surface rather than opening up.
Why It Happens
The exact cause of Kennedy ulcers is still not fully understood. The leading explanation centers on skin failure as part of multi-organ shutdown. When someone is actively dying, the body redirects its dwindling resources, blood flow, oxygen, nutrients, away from less critical functions. The skin, the body’s largest organ, loses the supply it needs to maintain itself. Tissue that was healthy hours earlier begins to break down.
Some researchers believe there is a pressure component, but the threshold is dramatically different from what causes a normal bedsore. In a healthy person, brief contact with a mattress causes no damage. In a dying patient whose circulation is already compromised, that same minor pressure may be enough to trigger rapid tissue death. This helps explain why these ulcers appear even in patients receiving excellent preventive care, including regular repositioning and pressure-relieving mattresses.
How Common Are Kennedy Ulcers
Kennedy ulcers are not rare, but they don’t occur in every dying patient. A multicentre study of cancer patients admitted to hospice found that 17.3% of all patients developed some form of pressure ulcer, while the incidence of Kennedy terminal ulcers specifically was 2.7%. So roughly 1 in 37 hospice patients in that study developed one. The numbers suggest that while skin changes at the end of life are common, the distinct Kennedy ulcer pattern affects a smaller subset of dying patients.
How It’s Managed
Because a Kennedy ulcer cannot be healed, the goal of care shifts entirely from treatment to comfort. This is a fundamental change in approach: the wound itself is no longer the problem to solve. The person’s quality of life in their remaining time is.
Pain management becomes the top priority. The wound can be painful, and even routine care like repositioning can cause discomfort. Clinicians weigh each decision about whether and how often to move the patient, sometimes choosing to reduce repositioning if it causes more suffering than benefit. When repositioning is necessary, pain medication is often given beforehand.
Odor control is another practical concern. Special dressings containing charcoal or antimicrobial agents can help manage smell, which matters both for the patient’s comfort and for family members spending time at the bedside. Managing fluid drainage from the wound and keeping surrounding skin dry are also part of routine care.
Perhaps just as important as the physical management is the emotional support for families. Seeing a wound appear suddenly on a loved one can be alarming and can trigger guilt, especially if family members wonder whether something was missed. Counseling about what Kennedy ulcers are, why they happen, and why they are not anyone’s fault is a recognized part of care. Understanding that the ulcer is a sign of the body’s natural dying process, not a sign of neglect, can bring real relief during an incredibly difficult time.
What It Means as a Prognostic Sign
The appearance of a Kennedy ulcer is increasingly recognized as a reliable indicator that death is approaching. Because of this, clinicians may use it as a signal to shift the overall care plan. Aggressive treatments, diagnostic tests, and interventions aimed at extending life may be reconsidered in favor of comfort-focused care. For families, the ulcer can serve as a difficult but important cue that the time remaining is limited, allowing them to focus on being present rather than pursuing treatments that are unlikely to help.