[Cutaneous immunofluorescence in B virus diseases. 100 cases]

Area of Science:

• Immunology
• Hepatology
• Dermatology

Background:

• Hepatitis B virus (HBV) infection is associated with various systemic diseases.
• Extrahepatic manifestations of HBV are not fully understood.
• Immunological investigations are crucial for diagnosing HBV-related conditions.

Purpose of the Study:

• To evaluate the utility of skin immunofluorescence testing in patients with Hepatitis B virus diseases.
• To determine the correlation between HBs-antigen skin deposits and clinical manifestations.

Main Methods:

• Immunofluorescence tests were conducted on skin biopsies.
• Patients were categorized into three groups: HBV disease (Group I), non-HBV disease (Group II), and healthy controls (Group III).
• HBs-antigen, immunoglobulins, and complement deposits in dermal vessels were assessed.

Main Results:

• Positive immunofluorescence findings (deposits in dermal vessels) were observed in 8 patients with HBV diseases and 3 patients without HBV.
• Positive skin tests occurred in patients with prolonged hepatitis, chronic persistent hepatitis, chronic active hepatitis, and periarteritis nodosa.
• Some patients with positive skin tests had no clinical manifestations of HBV disease.

Conclusions:

• Skin immunofluorescence may serve as a valuable tool in the immunological workup of diseases associated with Hepatitis B virus.
• A positive skin test for HBs-antigen does not always correlate with clinical symptoms.
• Systematic performance of skin immunofluorescence is recommended for diseases where HBV involvement is suspected.