This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
The ‘Iris lesions ’ are pathognomonic of 
Select and explain. 
A. SLE, B. Erythema Multiforme, C. Apthous ulcers, D. DLE
B: Erythema Multiforme
Answer: B: Erythema Multiforme 
Explanation: Erythema Multiforme
The classic skin lesion consists of a central blister or necrosis with concentric rings of variable color around it called typical “target” or “iris” lesion that is pathognomonic of EM;
variants are called “atypical target” lesions (Figure 4-16). The skin may feel itchy and burnt. Postinflammatory hyperpig - mentation is common in dark-skinned individuals and may be worsened by sun exposure.