|Description:||The man’s left chest depicted here, revealed the presence of a large lesion that was attributed to his condition, which in this case, was the tubercular form of leprosy, caused by the bacterium, Mycobacterium leprae. This form of the disease is characterized by the presence of asymmetrically-distributed solitary skin lesions, and under the newer World Health Organization (WHO) standards, this type of leprosy is classified as paucibacillary (PB), leprosy.|
A chronic infectious disease, leprosy usually affects the skin and peripheral nerves, but has a wide range of possible clinical manifestations. Patients are classified as having paucibacillary or multibacillary Hansen's disease. Paucibacillary Hansen's disease, which was the case here, is milder and characterized by one or more hypopigmented skin macules. Multibacillary Hansen's disease (see PHIL 15454 – 15459) is associated with symmetric skin lesions, nodules, plaques, thickened dermis, and frequent involvement of the nasal mucosa resulting in nasal congestion and epistaxis.