What makes a wound atypical
Most long-lasting wounds fall into a few familiar groups: pressure injuries, venous and arterial leg ulcers, diabetic foot ulcers and surgical wounds. Each has a usual location, look and response to care. A wound is called atypical when it does not match any of them.
Atypical wound care starts with a question instead of a routine: what is driving this wound? Some atypical wounds are linked to inflammatory or autoimmune conditions, in which the body’s immune response damages skin or small blood vessels. The label is a reason to investigate, not a diagnosis.
If you are looking for help with this wound close to home, start with our overview of wound care in St. Louis.
Signs that lead a clinician to look further
No single feature proves anything, and many ordinary wounds show one of these. Together, they suggest the first explanation may not be the whole story.
- A location that is unusual for common wound types
- Pain far greater than the size of the wound would explain
- Edges that are purple, dusky, ragged or overhanging
- A sore that began as a small bump, blister or pimple and grew quickly
- A wound that got worse after a minor injury or a procedure
- Little or no progress despite consistent care for the presumed cause
- Several wounds at once, or wounds along with rash, joint pain or fevers
- Tissue that is raised, crusted or bleeds easily, or a sore in an old scar
A wound that has simply been slow is a different situation, covered on our page about non-healing wounds.
Causes a clinician may consider
The list is long, which is why testing is often needed. It includes inflammatory skin conditions, inflammation of blood vessels, and skin ulcers that can occur with diseases such as rheumatoid arthritis, lupus or inflammatory bowel disease. It also includes uncommon infections, medication reactions, blood and clotting disorders, and skin problems related to advanced kidney disease.
Occasionally a sore that will not heal turns out to be a skin cancer, covered under cancer-related wounds. Only an examination, your history and often lab results can show which, if any, applies to you.
How the cause is worked out
The treating clinician begins with the story of the wound: how it started, how fast it changed and what has been tried. Your other health conditions and a complete medication list matter too, and the guide on what records to gather can help.
The clinician may then order blood tests, a culture, circulation testing or a biopsy, which is a small sample of tissue sent to a lab. Gateway can help with lab and imaging coordination so results reach everyone who needs them.
The order of steps matters. Some inflammatory wounds are managed mainly with medicines that calm the immune system, and some can worsen with procedures that help other wounds. Clinicians often hold off on certain treatments until the cause is clearer.
Where dermatology and rheumatology fit
Dermatologists diagnose skin disease. They often perform or interpret the biopsy and may direct treatment aimed at the skin. Rheumatologists manage autoimmune and inflammatory diseases that affect the whole body, including the medicines used to control them.
Other specialists may be involved too, and primary care connects the pieces. Gateway’s page on specialist referral coordination explains how referrals are handled.
Wound care does not stop while this happens. The wound care clinician keeps measuring the wound, managing drainage, protecting the surrounding skin and addressing pain, then adjusts the plan as the specialists learn more.
Changes to report and when to call 911
Tell the treating clinician promptly about:
- A wound that is growing quickly, or new wounds appearing elsewhere
- Pain that is rising or hard to control
- Skin around the wound turning purple, gray or black
- Fever, chills, spreading redness or foul-smelling drainage
- New rash, joint swelling, mouth sores or unusual tiredness
Call 911 for heavy bleeding that will not stop, trouble breathing, chest pain, confusion or fainting.
How Gateway helps with atypical wounds
Gateway does not diagnose wounds. We arrange wound care and primary care with partner clinicians across Greater St. Louis and the Metro East. For an atypical wound, our part is usually gathering past records, sending clinician orders and referrals where they need to go, tracking results and keeping every office informed.
If you have been treated for a while without answers, a second opinion wound review may be a reasonable next step. You or a family member can reach us at 314-325-0126 or through the request care page. We will confirm whether visits are available where you live.
Common questions
How do I know whether my wound is atypical?
You cannot tell on your own, and you do not need to. What you can do is notice when things do not add up: severe pain from a small sore, fast growth, an odd location, or no progress after steady care. Then ask your clinician, “Could this be something other than what we have been treating?”
Will I need a biopsy?
Not always. The treating clinician or a dermatologist decides, based on how the wound looks and behaves and on what earlier tests showed. If one is recommended, ask who will perform it, when results are expected and who will explain them. A biopsy result is read together with your exam and history.
Why would a wound get worse after a procedure?
In a small number of inflammatory conditions, injured skin reacts with more inflammation, so a cut, a needle stick or a wound procedure can be followed by a larger sore. This is uncommon, and worsening has other explanations too, including infection. If you have seen this happen, tell every clinician involved.
Can an inflammatory wound heal?
Many improve once the underlying condition is identified and brought under control, but the course differs for every person and no one can promise a result. These wounds often need treatment of the whole condition, not only the skin, and they can flare again later. Ask your clinicians what the goals are now and which changes would signal a flare.
Related pages
General information to help you talk with your own clinician. It is not medical advice, and the treating clinician makes every clinical decision. For a medical emergency, call 911.