Many different classifications exist.
A rough and simple clinical classification is as follows:
Tuberculoid (TT) - Three or less lesions _ well defined border _ asymmetrical distribution.
Borderline Tuberculoid (BT)-More than three and less than 10 lesions will defined border _ asymmetrical distribution (or) less than three if border is defined in certain areas or if satellite lesions are present.
Mid borderline (BB)- More than ten _ roughly bilateral and symmetrical with well defined borders.
Lepromatous (LL) - Numerous lesions _ bilateral and symmetrical _ vague and ill defined _ diffuse infiltration of the skin _ presence of nodules.
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