Pancytopenia in Lyme disease.

Area of Science:

• Infectious Diseases
• Hematology
• Internal Medicine

Background:

• Lyme disease, caused by Borrelia burgdorferi, is a tick-borne illness with diverse clinical manifestations.
• Typical Lyme disease symptoms include erythema migrans, flu-like symptoms, and neurological or cardiac involvement.
• Atypical presentations can mimic other systemic diseases, posing diagnostic challenges.

Observation:

• A 49-year-old male presented with subacute fever, weakness, dyspnea, unilateral leg edema, and pancytopenia.
• Laboratory findings revealed an intravascular hemolytic pattern.
• Extensive workup for ehrlichiosis, anaplasmosis, babesiosis, Rocky Mountain spotted fever, HIV, hepatitis B, and parasitic infections was negative.

Findings:

• Positive serology for Lyme disease was identified in the patient.
• The clinical and laboratory findings were inconsistent with common tick-borne co-infections.
• The patient's presentation was deemed a highly atypical manifestation of Lyme disease.

Implications:

• This case underscores the importance of considering Lyme disease in the differential diagnosis of unexplained hemolytic anemia and pancytopenia.
• Physicians should be aware of the broad spectrum of Lyme disease presentations, even in the absence of classic symptoms.
• Further research may elucidate the mechanisms behind such unusual hematological manifestations of Lyme disease.