Yes. Long COVID can include a skin rash, and some people report itchy welts, red or discolored patches, or other skin changes that persist after the initial infection. However, a rash has many possible causes, including medicines, allergies, and unrelated skin conditions. The timing alone cannot show what caused it. A clinician can assess the rash alongside your COVID history and other symptoms.
How is a rash linked to Long COVID?
Long COVID refers to a range of ongoing or new health problems that develop after a COVID-19 infection. These problems can affect several parts of the body, including the skin. The Centers for Disease Control and Prevention (CDC) lists rash among the reported symptoms of Long COVID. Skin changes may occur alongside other symptoms or be one of several health problems that continue after the initial illness.
A rash that persists or appears after COVID-19 does not necessarily mean the virus is responsible. Skin problems can have several explanations, and some may have started during the infection while others may be unrelated. The relationship between the rash, the original illness, and any other ongoing symptoms should be considered together.
What does a Long COVID rash look like?
There is no single appearance that identifies a rash associated with Long COVID. Skin changes linked to COVID-19 have been reported in different forms, and they may look different from one person to another. The American Academy of Dermatology (AAD) describes several patterns of COVID-related skin reactions, including rashes that can remain present in people experiencing Long COVID.
Examples of skin changes that may occur include:
- Hives: Raised, itchy welts that may appear in one area or across several parts of the body.
- Red or discolored patches: Areas of skin that appear different in color from the surrounding skin.
- Flat spots or raised bumps: Small spots or larger areas where multiple bumps join together.
- Lace-like patterns: A net-like pattern of discoloration across the skin.
- Blister-like changes: Small fluid-filled bumps that can occur with some COVID-related skin reactions.
- Changes affecting the toes or fingers: Swelling, redness, or discoloration sometimes described as COVID toes.
These are examples of skin reactions reported in connection with COVID-19, not a checklist for identifying Long COVID. Other conditions can cause similar changes, so a rash needs to be assessed in its full clinical context.
When can a rash appear after COVID-19?
A COVID-related skin reaction may develop during the initial infection, shortly afterward, or as part of a longer-lasting pattern of symptoms. The Mayo Clinic notes that skin changes associated with COVID-19 may appear while other symptoms are present or up to a month later. However, this timing describes reported COVID-related skin reactions generally and does not establish that a later rash is caused by Long COVID.
Some rashes clear within days, whereas others may persist. According to the AAD, most reported COVID-related rashes last around two to 12 days, although changes affecting the toes can last longer. In some people with Long COVID, a rash may remain for weeks or months. These time frames do not predict how long an individual rash will last, particularly when its cause has not been established.
A rash that disappears and later returns, or one that develops well after recovery, deserves consideration alongside other symptoms, medication changes, and possible skin irritants. Timing is useful information for a clinician, but it cannot confirm the cause by itself.
Could something other than Long COVID be causing the rash?
Yes. Many common conditions can cause skin changes that resemble those reported after COVID-19. Possible explanations include allergic reactions, eczema, contact dermatitis from soaps or other products, heat-related irritation, and other infections. A reaction to a newly started medicine may also cause a rash.
It is important not to assume that every new skin problem following COVID-19 is a lingering effect of the infection. A rash may reflect an existing skin condition, a separate illness, or a medication reaction. A clinician can consider the timing, appearance, distribution, and duration of the rash, along with the person's medical history and any other symptoms, when evaluating the possible causes.
How is a possible Long COVID rash evaluated?
There is no single rash pattern or routine test that can independently establish that a skin problem is caused by Long COVID. Evaluation generally starts with a discussion of when the rash began, how it has changed, whether it itches or hurts, and whether other symptoms are present. A clinician may also ask about the original COVID-19 infection, recent illnesses, medicines, and new skincare or household products.
The MedlinePlus guide to rash evaluation explains that assessment may include a physical examination and questions about symptoms and medical history. Depending on what the clinician finds, additional tests or a skin sample may sometimes be needed to investigate other causes.
Consider arranging a medical appointment if the rash persists, keeps returning, spreads, worsens, causes ongoing discomfort, or interferes with sleep or daily activities. Seek prompt assessment for a painful rash, fever, signs of infection, or blisters, especially when the skin around the eyes, mouth, or genitals is affected.
What can help manage a rash after COVID-19?
Treatment depends on the type of rash and its underlying cause. There is no single treatment that is appropriate for every skin reaction associated with Long COVID. A clinician may recommend a treatment aimed at the specific skin condition or advise whether further investigation is needed.
While waiting for an assessment, gentle skin care may help avoid additional irritation. Use mild, fragrance-free products, avoid scratching the affected area, and stop using a newly introduced nonessential skincare product if it appears to make the irritation worse. Keep track of when the rash changes and take photographs to show how it develops. Do not stop prescribed medicines without consulting the prescribing clinician, even if a medication reaction is suspected.
Seek emergency medical care if a rash develops rapidly with difficulty breathing, throat tightness, or swelling of the face or tongue, as these may indicate a serious allergic reaction. A rapidly spreading rash with blisters, skin peeling, or sores involving the mouth or eyes also requires urgent medical assessment.
Overall, Long COVID can include a rash, and some COVID-related skin changes may persist. However, because many other conditions can cause similar symptoms, the most useful next step for a persistent or concerning rash is an appropriate medical assessment rather than assuming it is part of Long COVID.