Qu es el lupus cutneo? | California

Subacute cutaneous lupus is a rash with red, ring-shaped sores or scaly patches with distinct edges. The rash commonly occurs on the back, chest, and arms but sometimes extends to the buttocks. It does not affect the face or scalp very often. The rash usually does not scar (like discoid lupus), but it can cause

Subacute cutaneous lupus

Subacute cutaneous lupus is a rash with red, ring-shaped sores or scaly patches with distinct edges. The rash commonly occurs on the back, chest, and arms but sometimes extends to the buttocks. It does not affect the face or scalp very often. The rash usually does not scar (like discoid lupus), but it can cause skin discoloration. Subacute cutaneous lupus can occur by itself or as a complication of SLE. One of three cases of subacute cutaneous lupus is due to (or made worse by) commonly used drugs, such as proton pump inhibitors (like pantoprazole and omeprazole) and calcium channel blockers (like nifedipine and diltiazem). This can occur months to years after being on the causative drug.

Acute cutaneous lupus

Acute cutaneous lupus is a rash that happens when you have other lupus symptoms. As opposed to chronic cutaneous lupus, acute cutaneous lupus tends to come on quickly (acutely), doesn’t always last very long, and does not cause skin scarring. However, it can leave behind areas of skin discoloration, like with the subacute form above. Almost everyone with acute cutaneous lupus has systemic lupus erythematosus (SLE).

There are two main forms: localized and generalized.

You may have heard that some people with lupus get a “butterfly rash” or “malar rash.” This is the localized form of acute cutaneous lupus. The term  refers to the rash being on the cheeks (malar areas) and bridge of the nose — so it’s shaped like a butterfly. Though many people think of this rash when they think of systemic lupus, the butterfly rash only occurs in around 30% of systemic lupus patients.

Generalized acute cutaneous lupus shows up as raised red rashes all over the body and typically occurs in sick SLE patients.

Non-specific rashes in lupus

Skin inflammation from lupus does not just cause the cutaneous lupus rashes mentioned above. Many SLE patients will have skin involvement with rashes that can occur in other inflammatory or autoimmune conditions. Considering that the mucosa in the nose and mouth are extensions of the skin, nose and mouth sores are two of the most common examples of nonspecific skin involvement. Other examples include hives (urticaria), angioedema, cutaneous vasculitis, skin ulcers, bruises, livedo reticularis, telangiectasias, palmar erythema (red palms), erythema nodosum, and vitiligo. These are too numerous and complicated to discuss here, but it is important to mention them since they do commonly occur in SLE patients.

Cutaneous lupus in people of color

Though lupus occurs much more frequently in people of color, there is a lack of photos on the internet. The Lupus Foundation is working on correcting this problem. The red and pink rashes that we commonly talk about occurring on light skin tones may appear dark purple or dark brown on dark skin tones, making them easy to miss by inexperienced healthcare providers.

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