A red circle on the skin that is not itchy can be due to inflammatory skin conditions like granuloma annulare and lupus, or infections such as Lyme disease and syphilis. Partially treated itchy circular rashes may also present as non-itchy red circles on the skin.
Some rashes, like pityriasis rosea and erythema multiforme, may or may not be itchy. The symptoms can vary from one person to another, so a rash may be itchy for one person while non-itchy for another.
Below you will find red circle rashes divided into two groups: those that are usually not itchy, and those that may or may not cause itching. Further in the article, you’ll find a list of rashes that present as red circles on the skin and are typically associated with itchiness.
Note: This article covers red circle rashes. If you want to know about non-itchy red dots on the skin, please refer to this article.
Table of Contents
Usually non-itchy
Below are the rashes that can lead to non-itchy red circles on the skin.
Granuloma annulare
A red circle on the skin that is not itchy and has a smooth surface could be due to the localized type of granuloma annulare.
Granuloma annulare is an inflammatory skin condition and has various types. The most common one is the localized type, which presents as non-itchy red circles on the skin. The surface of these spots is smooth and the center may be slightly depressed.
These red circles commonly appear on the feet, hands, or fingers and are typically painless. There are a few other, less common types, such as the generalized type which is primarily seen in adults and can be itchy.
Cause
The exact cause behind granuloma annulare is not known. The precipitating factors include sun exposure, injury, certain medications, insect bites, and infection.
Treatment
Granuloma annulare spots usually resolve over time. However, treatment can help in clearing them faster. The treatment options include:
- Topical steroids or calcineurin inhibitors
- Oral medications such as steroids or antimalarials
- Steroid injections
- Cryotherapy (freezing)
- Laser treatment
Lupus
Cutaneous lupus refers to a group of disorders that affect the skin and often worsen after sun exposure. Some cases of skin lupus may be associated with systemic lupus erythematosus (SLE).
Cutaneous lupus has three main types: acute, subacute, and chronic. The acute type is often itchy, whereas the subacute and chronic forms, which can present as red circular spots, are usually not itchy.
Here are the typical features of the three types:
- Acute cutaneous lupus: This presents as a red rash in a butterfly pattern, typically involving the cheeks and nose.
- Subacute cutaneous lupus: Commonly seen on sun-exposed areas like the upper arms or trunk, this form presents with red, raised, circular, scaly spots that may resemble psoriatic patches.
- Chronic cutaneous lupus: The most common type of chronic form is discoid lupus, which often affects the scalp, ears, cheeks, nose, and lips. It presents with round, red, scaly patches or plaques that can lead to scarring and hair loss.
Cause
Factors such as genetics, environment, and immune system responses can contribute to lupus, which is most commonly seen in females aged between 20 to 50 years.
Treatment
Doctors may prescribe topical steroids, oral steroids, antimalarials, or immunomodulators. Additionally, it’s recommended to protect your skin from the sun and use broad-spectrum sunscreen.
Lyme disease
Lyme disease, prevalent in some areas of the USA and Europe, is a bacterial infection caused by the Borrelia bacterium. It is transmitted through the bite of an infected tick, with symptoms typically appearing between 3 to 30 days post-bite.
In around 50% of cases, individuals may develop flu-like symptoms such as headaches, fever, chills, joint pain, or enlarged lymph nodes.
Approximately 70% of patients present with a Lyme disease rash, also known as erythema migrans.
This rash is characterized by a red circle on the skin with a ‘bull’s eye’ appearance: a red spot at the center—usually marking the tick bite—surrounded by a clear zone and then an outer red ring. This rash is usually not itchy.
If left untreated, Lyme disease can affect several other body parts including the heart, central nervous system, eyes, and more. Late-stage symptoms may include nerve pain, numbness, headaches, dizziness, facial paralysis, vision loss, chest pain, abnormal heart rate, and arthritis.
Treatment
The treatment of Lyme disease should be started early to avoid complications and typically involves a course of antibiotics.
Syphilis
Syphilis is a sexually transmitted disease that presents in different stages depending on its progression. In primary syphilis, a painless, firm, round sore known as a chancre appears on the genitalia and usually heals within a few weeks.
This stage is followed by secondary syphilis, which occurs 3 to 8 weeks later. This can lead to oval or circular red or reddish-brown spots on the body that are typically not itchy, though they may feel scaly and rough.
The syphilis rash usually appears on the trunk, palms, and soles, and may be accompanied by systemic symptoms such as fever, malaise, or enlarged lymph nodes. If left untreated, the disease can progress to the next stage, tertiary syphilis, which can affect vital organs in the body.
Cause
Syphilis is caused by a spirochete bacterium known as Treponema pallidum and can be transmitted through direct contact with the lesions. Additionally, a pregnant woman can pass the infection to her baby.
Treatment
Syphilis is typically treated with antibiotics, most commonly penicillin. Early treatment helps prevent long-term complications.
May not be itchy
Below are the rashes that can lead to red circles on the skin which may or may not be itchy.
Treated circular rash
If an itchy circular rash has been treated, the itching may reduce or disappear altogether. This could also occur if you’ve used over-the-counter anti-itch lotions, many of which contain steroids that can alleviate itching.
Similarly, if a ringworm rash is treated with an over-the-counter antifungal cream, the itching will likely be reduced.
So, one should keep in mind that treatment can alter the symptoms. For these reasons, it’s important to inform your doctor if you’ve treated your red circle rash and what you’ve used. This information can assist in making a diagnosis.
Pityriasis rosea
Pityriasis rosea can present with red circles on the skin that may or may not be itchy. The onset of a pityriasis rosea rash may be preceded by flu-like symptoms such as fever and malaise.
The initial red patch that appears, referred to as the ‘Herald patch,’ usually emerges on the chest, back, or abdomen. This patch is circular or oval in shape and can measure up to 10 cm in size.
Up to two weeks following the appearance of the Herald patch, smaller red spots may appear, arranged in a pattern that can resemble a Christmas tree. These spots typically spread across the trunk, arms, and thighs.
Cause
The exact cause of pityriasis rosea remains unknown. However, some theories suggest its association with certain viruses, such as herpesvirus type 6, or specific medications.
Treatment
Treatment for pityriasis rosea mainly involves managing symptoms as the rash is self-limiting and usually clears within 6-10 weeks. If itching is present, your doctor may prescribe antihistamines or steroids.
Erythema multiforme
Erythema multiforme is an uncommon condition that can present with red circular spots on the skin. Often, it’s an immune-mediated reaction to an infection or medication, although the cause is not always identifiable.
The condition begins with red spots that may form target-like lesions on the skin. These lesions have three concentric rings: a red center that may form a blister, surrounded by a lighter swollen ring, followed by an outer red ring. The lesions are typically seen on the extremities.
Depending on the symptoms and areas affected, erythema multiforme can be classified into two types. Erythema multiforme minor presents with a skin rash without systemic symptoms or oral mucosa involvement.
In contrast, erythema multiforme major is more severe, involving both skin and mucosal surfaces, and is often accompanied by systemic symptoms.
Cause
The most common infectious trigger is the herpes simplex virus (HSV), type 1, which causes cold sores.
Other infections, and certain medications, including antibiotics and nonsteroidal anti-inflammatory drugs (NSAIDs), can also potentially cause erythema multiforme.
Treatment
Treatment depends on the severity of the condition. Mild cases may resolve on their own within 2-4 weeks, while severe cases require medical treatment. In any case, if erythema multiforme is suspected, it is best to consult a doctor.
Other causes
Below, you will find other causes of red circles on the skin, but they are usually itchy. However, the symptoms may vary from person to person.
Nummular eczema
Also known as discoid eczema or nummular dermatitis, nummular eczema manifests as small red bumps that cluster to form coin-shaped, pink, or red spots appearing as red circles on the skin. These spots typically range from 1-10 cm in size and may ooze clear fluid or have a scaly or crusty surface.
Discoid eczema is commonly associated with itching and typically affects the legs, arms, or trunk, sparing the face and scalp.
Cause
The exact cause of nummular eczema is not clear. However, it may be linked to factors such as physical injury, skin dryness, allergies, exposure to irritating soaps, poor circulation in the legs, a dry environment, rough fabrics, and certain medications.
Treatment
Treatment primarily involves restoring the skin’s barrier and avoiding further skin irritation. Gentle skincare complemented by thick emollient moisturizers can prove beneficial.
Your doctor may prescribe the following treatments:
- Topical steroids
- Antihistamines
- Systemic steroids
- Light therapy
Ringworm
A red circle on the skin is a characteristic feature of a ringworm rash. However, ringworm is typically itchy.
Ringworm is a contagious fungal infection that can affect the skin, nails, and scalp. The specific name and symptoms of the condition depend on the affected body part.
Ringworm affecting the body — excluding the hands, feet, groin, nails, and scalp — is known as tinea corporis. It appears as a red circle that may show signs of clearing in the center, with the edge of the circle often raised.
The patch can appear pink, red, or brown, depending on the skin tone, and the surface may appear scaly or flaky.
Cause
Ringworm is caused by fungi known as dermatophytes. The infection can be acquired through direct contact with infected lesions, contaminated surfaces, or infected animals.
Factors that may increase one’s susceptibility to acquiring ringworm include living in a humid environment, having a weakened immune system, diabetes, excessive sweating, and using public showers or gym rooms.
Treatment
Over-the-counter antifungals such as clotrimazole or terbinafine may help clear ringworm from the skin. If the scalp is affected or if the ringworm is resistant to over-the-counter treatment, your doctor may prescribe topical or oral antifungals.
Hives
Hives, also known as urticaria, can present as red circles on the skin, but they are typically itchy.
Hives can also appear as skin-colored or light-brown spots on the skin. These spots are blanchable, meaning they turn pale when you press them.
Depending on their duration, hives can be classified as either acute (lasting less than six weeks) or chronic (persisting longer than six weeks).
Cause
Hives often form due to the release of a chemical called histamine from our immune cells. They can appear in response to certain triggers, such as molds, infections, certain medications, and specific foods like nuts, seafood, and eggs. Animal dander, dust, and other allergens can also trigger hives.
Note: Sometimes, hives may be associated with anaphylaxis which is a serious allergic reaction. It can lead to difficulty breathing, chest tightness, nausea, vomiting, diarrhea, dizziness, and confusion. If you experience any of these symptoms, you should seek immediate medical attention.
Treatment
Treatment includes avoiding the identified trigger, taking over-the-counter antihistamines, and in some cases, using prescription medications.
Psoriasis
Psoriasis is a chronic inflammatory skin condition characterized by an accelerated turnover of skin cells. Symptoms can vary depending on the type of psoriasis.
The most common type, plaque psoriasis, can present with red circular spots on the skin. These spots are raised and are known as plaques. They are often covered with silvery white scales.
While it is usually associated with itching, the severity can range from mild to moderate in some cases. The most commonly affected areas include the elbows, knees, scalp, and trunk.
Cause
The exact cause of psoriasis is not entirely understood, but genetic factors, the immune system, and environmental factors are believed to play a role. Any injury, infection, or stress can trigger an outbreak.
Treatment
Psoriasis is usually treated with topicals and shampoos containing coal tar or salicylic acid. In some cases, topical steroids, immunosuppressants, or derivatives of vitamins D or A (retinoids) may be prescribed. Phototherapy can also be an effective treatment option.
Contact dermatitis
Red circles on the skin may also be a result of contact dermatitis, which can occur if the skin comes into contact with any round object. For instance, this could happen after an ECG where round pads were used and the person’s skin became irritated.
There are two types of contact dermatitis:
- Allergic contact dermatitis occurs when the skin comes into contact with an allergen, such as jewelry with nickel, poison ivy, etc.
- Irritant contact dermatitis can occur when the skin comes into contact with an irritant capable of damaging the skin barrier. Common irritants include fragrances, essential oils, and surfactants.
Treatment
One should avoid further contact with the allergen or irritant. A cool compress may reduce itching.
Antihistamines and topical steroids may help reduce symptoms. In addition, one should use gentle skincare products and avoid metal jewelry containing nickel.
When to see a doctor
It is advisable to seek medical attention if:
- The rash covers a large area of the body.
- The rash occurred after a tick bite.
- It is painful.
- There is visible discharge.
- It is accompanied by other symptoms like fever, confusion, dizziness, headache, joint pain, etc.
- The rash doesn’t improve.
- You are uncertain about what is causing the rash.
Key points
Non-itchy red circles on the skin can be caused by conditions like granuloma annulare, lupus, Lyme disease, syphilis rash, or any treated circular rash. Pityriasis rosea and erythema multiforme can also present with non-itchy red circles on the skin.
Conditions like ringworm, discoid eczema, psoriasis, contact dermatitis, and hives can present with a red circle on the skin, but they are often associated with itching.
It’s important to note that symptoms may vary from one person to another. To accurately identify the cause of a red circle on the skin, it’s important to consult with a doctor.
References
- Prignano F, Ricceri F, Pescitelli L, Lotti T. Itch in psoriasis: epidemiology, clinical aspects and treatment options. Clin Cosmet Investig Dermatol. 2009 Feb 19;2:9-13. doi: 10.2147/ccid.s4465. PMID: 21436964; PMCID: PMC3047933.
- Hafsi W, Badri T. Erythema Multiforme. [Updated 2023 May 27]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023 Jan.
Disclaimer: This article is for information purposes only and does not replace medical advice.