What symptom is typically present in systemic lupus erythematosus (SLE)?

In systemic lupus erythematosus (SLE), a hallmark feature is the presence of the malar rash, often referred to as the "butterfly rash." This distinctive rash typically appears across the cheeks and nose, resembling the shape of a butterfly. Its occurrence is one of the diagnostic criteria for SLE and is indicative of the systemic inflammation caused by the autoimmune processes in this condition.

The malar rash is characterized by erythema and can be triggered or exacerbated by sun exposure, which is relevant as individuals with SLE often have photosensitivity. Recognizing this rash is crucial in clinical practice for the diagnosis of SLE and differentiating it from other conditions that may present with skin manifestations.

While other symptoms like bilateral joint pain, fever and chills, and rashes on the trunk can occur in SLE, they are not as definitive or specific to the disease as the malar rash, making it a key identifying symptom for this autoimmune disorder.