Leishmania in SLE mimicking an exacerbation

Area of Science:

• Internal Medicine
• Infectious Diseases
• Rheumatology

Background:

• Systemic lupus erythematosus (SLE) is a complex autoimmune disease with diverse clinical presentations.
• Visceral leishmaniasis (VL) is an endemic parasitic infection that can present with symptoms overlapping with SLE flares.
• Accurate differential diagnosis between SLE and VL is critical due to overlapping clinical and laboratory features.

Observation:

• Fever, pancytopenia, splenomegaly, hypergammaglobulinemia, autoantibody production, and complement consumption are shared manifestations.
• Patients with SLE presenting with these symptoms require careful evaluation for VL.
• Diagnosis of VL involves serological tests, detection of amastigotes in tissues, and parasite culture.

Findings:

• This paper details a case of visceral leishmaniasis in a patient diagnosed with systemic lupus erythematosus.
• The study highlights the significant overlap in clinical and laboratory findings between SLE and VL.
• Diagnostic challenges in differentiating between these two conditions are discussed based on current literature.

Implications:

• Missed diagnosis of VL in SLE patients can lead to increased immunosuppression and fatal outcomes.
• Prompt recognition and specific anti-parasitic treatment are essential for managing VL in SLE patients.
• This case underscores the importance of considering endemic infections in the differential diagnosis of autoimmune disease flares.