Cutaneous lupus erythematosus: information for patients

A guide to recognizing the most common forms of lupus on the skin, reducing outbreaks, and knowing when to seek medical evaluation.

Summary in 60 seconds

• Cutaneous lupus erythematosus is a group of autoimmune diseases that primarily affect the skin.
• It can appear only on the skin or be part of systemic lupus erythematosus.
• It is not contagious and does not, in itself, mean that the person has a serious illness.
• Exposure to ultraviolet radiation, even from indirect sunlight or certain lights, can trigger skin outbreaks.
• It may appear as «butterfly wing» redness, rounded plaques, scaly lesions, spots, or areas of hair loss.
• Some forms, such as discoid lupus, can leave scars if not treated in time.
• Sun protection, avoiding tobacco, and not manipulating the lesions are important measures.
• The dermatologist may order blood tests, evaluate the scalp, and in some cases, perform a skin biopsy.
• Treatment depends on the type, extent, risk of scarring, and presence or absence of general symptoms.
• The key is always to have professional guidance in an orderly manner, without alarmism and above all without self-medicating.

What is cutaneous lupus erythematosus?

Cutaneous lupus erythematosus is a form of lupus in which the immune system causes inflammation in the skin. “Cutaneous” means that it affects the skin, although some people may also experience symptoms in other organs. Therefore, diagnosis is not limited to examining a rash: it seeks to determine whether it is a localized form or if there are signs of systemic lupus. The usual classification includes acute, subacute, intermittent—such as lupus tumidus—and chronic forms, including discoid lupus. DermNet 2024

In practical terms, not all lupus on the skin behaves the same way. Some lesions appear and disappear without scarring; others, especially discoid lupus on the scalp, ears, or face, can leave permanent marks if not treated early. The British Association of Dermatologists guidelines recommend assessing the clinical type, extent, risk of scarring, and possible association with systemic lupus before deciding on treatment. O’Kane 2021

In cutaneous lupus erythematosus, photoprotection is not an aesthetic detail: it is usually a central part of the treatment.

Why does it appear?

Cutaneous lupus erythematosus does not usually have a single cause. Evidence describes it as resulting from several factors: genetic predisposition, activation of the immune system, and environmental stimuli. Among the most recognized triggers are ultraviolet radiation, tobacco, and some medications. O’Kane 2021

Ultraviolet light is especially relevant. It can come from the sun and, in some highly sensitive individuals, also from certain artificial sources. The reaction doesn’t always appear on the same day: in some cases, it can take days or weeks, making it difficult for the patient to connect the exposure with the flare-up. Therefore, sun protection is not considered a cosmetic detail, but a central part of cutaneous lupus care. O’Kane 2021

Some cases of subacute cutaneous lupus may be related to medications. Associations have been described with various drug classes, such as antihypertensives, antifungals, and other treatments; this does not mean they should be discontinued without medical advice. If a new and persistent rash appears, it is wise to bring a complete list of medications to the dermatologist or treating physician. Lowe 2011

What does it look like and what symptoms does it cause?

The appearance depends on the type of cutaneous lupus. The acute form can cause redness on the cheeks and bridge of the nose, known as a malar or «butterfly» rash, and is more closely associated with systemic lupus activity. The subacute form usually appears on sun-exposed areas, such as the arms, neck, chest, or upper back, with reddish ring-shaped plaques or scaly lesions that may resemble psoriasis. The chronic discoid form tends to form more persistent plaques with scaling, follicular plugging, discoloration, and a risk of scarring. DermNet 2024

Less common variants also exist. Lupus tumidus can appear as smooth, reddish, or swollen plaques, often in sun-exposed areas. Deep lupus can cause firm nodules under the skin that leave indentations. Lupus pernio, or «chilblain lupus,» can affect fingers or toes, especially in cold, damp weather, causing pain, itching, or small ulcers. In people with dark or black skin, color changes—light or dark patches—can be particularly noticeable and affect quality of life. DermNet 2024

Symptoms vary. Some people experience itching, burning, or tenderness; others notice the visual change more than the physical discomfort. On the scalp, a persistent plaque with scaling, redness, or localized hair loss should be evaluated promptly, because some forms can cause scarring alopecia, that is, permanent hair loss.

What can you do today?

The most important measure is to protect your skin from ultraviolet radiation every day . This includes seeking shade, wearing a wide-brimmed hat, sunglasses, long-sleeved clothing or clothing with UPF protection, and applying a broad-spectrum, water-resistant sunscreen with SPF 30 or higher. The American Academy of Dermatology recommends reapplying sunscreen every two hours when outdoors and after sweating or swimming. AAD 2022

It’s also helpful to keep a systematic record: take well-lit photographs, note whether the outbreak appeared after sun exposure, heat, cold, stress, infection, or a change in medication, and bring this information to your appointment with the dermatologist. This practice doesn’t replace a diagnosis, but it does help reconstruct the history of the lesions.

Daily care should be gentle. It is preferable to use non-aggressive cleansers and simple moisturizers, and to avoid exfoliants, harsh acids, or vigorous rubbing on lesions. If burning or open sores occur, it is advisable to discontinue use of irritating products until medical advice is received. Quitting smoking, or seeking help to do so, is also important: guidelines and dermatological societies associate smoking with worse cutaneous lupus activity and a poorer quality of life. O’Kane 2021 , AAD 2022

If sun protection significantly reduces your sun exposure, ask your doctor if you need to have your vitamin D levels checked or take a supplement. Not everyone requires it, but it’s a reasonable topic of discussion for those who strictly avoid the sun.

What NOT to do?

Sunbathing “to improve your skin” and using tanning beds are not recommended. In cutaneous lupus, ultraviolet radiation can trigger or worsen flare-ups, even when the exposure seems moderate. It is also not advisable to stop taking medication if you suspect “drug-induced lupus”; that decision should be made by a doctor, who will weigh the risks and alternatives.

Avoid picking at, scratching, picking at, or covering active lesions with irritating products. Friction can worsen inflammation and cause scarring. It’s also not advisable to use potent corticosteroids on the face, eyelids, skin folds, or genitals without a dermatologist’s recommendation: they can be helpful when used correctly, but they can also thin the skin, cause visible blood vessels, or worsen other conditions.

Don’t assume that a persistent plaque is «dryness,» psoriasis, a fungal infection, rosacea, or eczema. Several diseases can resemble cutaneous lupus, and some require very different treatments. When there is clinical doubt, a biopsy can be a useful tool. O’Kane 2021

When should I consult?

Consult a dermatologist if a new, persistent, or recurring lesion appears, especially if it is aggravated by sun exposure or causes discoloration. A consultation is more urgent if there is a risk of scarring, scalp involvement, or general symptoms.

Warning signs:

• Lesions on the face, ears, lips, or scalp that persist for more than 2–3 weeks.
• Localized hair loss with flaking, redness, pain, or shine on the skin.
• Plaques that ulcerate, bleed, hurt, or form persistent crusts.
• Rash after sun exposure accompanied by fever, intense tiredness or joint pain.
• Mouth or nose ulcers, joint swelling, chest pain, or shortness of breath.
• Foamy urine, leg swelling, or elevated blood pressure in a person with known lupus.
• Pregnancy, treatment to become pregnant, or a history of anti-Ro/SSA or anti-La/SSB antibodies.
• Use of multiple medications and the appearance of a new rash consistent with cutaneous lupus.

These signs do not automatically mean a serious complication, but they do warrant a more complete and timely medical evaluation.

What does a dermatologist usually do?

The dermatologist usually begins with a detailed medical history: when the lesions appeared, whether they worsen with sun exposure, what medications you are taking, and whether there is joint pain, fever, oral ulcers, hair loss, Raynaud’s phenomenon, or a family history of the condition. Then they examine the skin, scalp, nails, and, if necessary, the oral mucosa.

In some cases, blood and urine tests are ordered to look for signs of systemic lupus or inflammatory activity. These tests may include a complete blood count, kidney function tests, urinalysis, ANA, anti-Ro/SSA, anti-La/SSB, anti-dsDNA, complement, and other markers depending on the case. Not everyone needs all of these tests.

When the appearance is unclear, when there is a risk of scarring, or when the diagnosis needs to be confirmed, a skin biopsy may be indicated. A biopsy is not a punishment, nor does it mean cancer: it is a small sample that helps distinguish cutaneous lupus from other similar diseases. In selected situations, direct immunofluorescence may be added, although it is not routinely requested in all cases. O’Kane 2021

Treatment typically combines photoprotection, daily care measures, and medications. For localized lesions, topical corticosteroids may be used for limited periods, or calcineurin inhibitors may be used. In thick or discoid lesions, intralesional corticosteroids are sometimes applied. If the disease is extensive, recurrent, subacute, or at risk of scarring, antimalarials such as hydroxychloroquine may be indicated. Guidelines recommend monitoring dosage and ocular safety in prolonged treatments. O’Kane 2021 , RCOphth 2020

Frequently Asked Questions

Is cutaneous lupus erythematosus contagious?

• No. It’s an autoimmune inflammatory disease, not an infection. It’s not transmitted through contact, kissing, sharing towels, or living with another person.

Does having lupus on the skin mean having systemic lupus?

• Not necessarily. Some people have lupus limited to the skin, while others have or develop systemic lupus. The likelihood varies depending on the subtype and clinical or laboratory findings. Therefore, the initial evaluation usually focuses on general symptoms and, if appropriate, additional tests.

Does cutaneous lupus leave scars?

• It can be done, especially in chronic forms like discoid lupus and in scalp lesions. Early treatment aims to reduce inflammation, prevent scarring, and preserve hair when still possible.

Which sunscreen is best if I have cutaneous lupus?

• Generally, a broad-spectrum sunscreen with SPF 30 or higher, water-resistant and well-tolerated by your skin, is recommended. It should be applied liberally and reapplied. For skin prone to blemishes, some dermatologists prefer tinted sunscreens because they can help protect against some visible light, although the choice should be tailored to each individual.

Is there a cure for cutaneous lupus erythematosus?

• It can have prolonged periods of control, but many forms behave like chronic diseases with flare-ups. The realistic goal is to reduce activity, prevent scarring, improve symptoms, and monitor for systemic symptoms.

Can I wear makeup if I have cutaneous lupus?

• In many cases, yes, provided the products are non-irritating, removed gently, and not used to conceal lesions that require medical attention. Sunscreen should remain the cornerstone of daytime skincare.

Can it be confused with rosacea, psoriasis, fungal infections, or eczema?

• Yes. Some forms can resemble other inflammatory or infectious skin diseases. The distribution, relationship to sun exposure, presence of scarring, tests, and, in certain cases, biopsy help to distinguish them.

Bibliography and sources

• O’Kane D, McCourt C, Meggitt S, D’Cruz DP, Orteu CH, Benton E, et al. British Association of Dermatologists guidelines for the management of people with cutaneous lupus erythematosus 2021 . Br J Dermatol. 2021;185(6):1112-1123. doi:10.1111/bjd.20597.
• Fanouriakis A, Kostopoulou M, Andersen J, Aringer M, Arnaud L, Bae SC, et al. EULAR recommendations for the management of systemic lupus erythematosus: 2023 update . Ann Rheum Dis. 2024;83(1):15-29. doi:10.1136/ard-2023-224762.
• Parodis I, Girard-Guyonvarc’h C, Arnaud L, Distler O, Domján A, Van den Ende CHM, et al. EULAR recommendations for the non-pharmacological management of systemic lupus erythematosus and systemic sclerosis . Ann Rheum Dis. 2024;83(6):720-729. doi:10.1136/ard-2023-224416.
• Okon LG, Werth VP. Cutaneous lupus erythematosus: diagnosis and treatment . Best Pract Res Clin Rheumatol. 2013;27(3):391-404. doi:10.1016/j.berh.2013.07.008.
• Blake SC, Daniel BS. Cutaneous lupus erythematosus: A review of the literature . Int J Womens Dermatol. 2019;5(5):320-329. doi:10.1016/j.ijwd.2019.07.004.
• Uva L, Miguel D, Pinheiro C, Freitas JP, Marques Gomes M, Filipe P. Cutaneous manifestations of systemic lupus erythematosus . Autoimmune Dis. 2012;2012:834291. doi:10.1155/2012/834291.
• Stull C, Sprow G, Werth VP. Cutaneous involvement in systemic lupus erythematosus . Curr Allergy Asthma Rep 2023;23(2):49-62.
• Lowe GC, Henderson CL, Grau RH, Hansen CB, Sontheimer RD. A systematic review of drug-induced subacute cutaneous lupus erythematosus . Br J Dermatol. 2011;164(3):465-472. doi:10.1111/j.1365-2133.2010.10110.x.
• DermNet NZ. Cutaneous lupus erythematosus [Internet] . DermNet; updated 2024 Sep [cited 2026 Jul 2] .
• American Academy of Dermatology Association. Lupus and your skin: self-care dermatologists recommend [Internet] . AAD; 2022 [cited 2026 Jul 2] .
• American Academy of Dermatology Association. Lupus and your skin: diagnosis and treatment [Internet] . AAD; 2022 [cited 2026 Jul 2] .
• The Royal College of Ophthalmologists. Hydroxychloroquine and chloroquine retinopathy: recommendations on monitoring [Internet] . RCOphth; 2020 [cited 2026 Jul 2] .