targetoid lesions - Health Topics
In medicine, a targetoid object is a structure or lesion that has the appearance of a target or is target-like. Targetoid lesions are distinguished by a concentric ring-like appearance that resembles a target or bull's-eye. Targetoid refers to lesions that are erythematous to violaceous, characterized by a central slightly raised papule surrounded by a thin pale rim and an outer erythematous to violaceous urticarial rim, resembling an iris.
Understanding the Context
Targetoid lesions are target-like in appearance, with usually two concentric zones and are seen in several dermatologic conditions other than erythema multiforme. The clinical features of targetoid lesions occurring soon after herpes simplex virus (HSV) infection points to a diagnosis of erythema multiforme (EM), which was confirmed by punch biopsy. Classic target lesions should be distinguished from targetoid, gyrate, and annular lesions. Another name for a hobnail haemangioma is targetoid haemosiderotic haemangioma.
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Key Insights
It is a benign (non-cancerous) overgrowth of blood vessels, generally occurring on an arm, leg or trunk of a young to middle-aged person. On detailed history, it was revealed that the patient had recently moved into new housing, and given the clinical concern for arthropod bites, an exterminator was sent to her apartment complex, where an extensive bed bug infestation was identified. The patient was seen in clinic 10 days after the initial eruption, and her lesions had resolved. Targetoid Rash in an Infant—Hit the Target! - American Academy of ...