Histoid hansen's with transepidermal elimination: Five cases

Area of Science:

• Dermatology
• Infectious Diseases
• Microbiology

Background:

• Histoid leprosy is a rare manifestation of multibacillary leprosy, characterized by distinct histopathological features and nodular skin lesions.
• The presence of Mycobacterium leprae within the epidermis is infrequently reported but may play a role in disease transmission.

Observation:

• This report details five new cases of histoid leprosy.
• All observed cases exhibited asymptomatic, firm, dome-shaped papulonodules on the skin and subcutaneous tissues.
• A key observation was the presence of transepidermal elimination in these histoid leprosy cases.

Findings:

• The study confirms histoid leprosy in five patients presenting with characteristic nodular lesions.
• Crucially, transepidermal elimination of Mycobacterium leprae was identified in all five cases.
• This finding highlights a less common pathway for bacterial shedding in histoid leprosy.

Implications:

• The identification of transepidermal elimination in histoid leprosy suggests a potential mechanism for Mycobacterium leprae transmission.
• Understanding this pathway can inform public health strategies and transmission control measures for leprosy.
• Further research into epidermal shedding is warranted to fully elucidate the transmission dynamics of histoid leprosy.