A rash may persist after scabies treatment. Reasons for this include persistent infestation due to incorrectly applied treatment, treatment resistance, or reinfestation due to an untreated contact. The hypersensitivity reaction can be slow to settle despite the complete cure of parasitic infestation. Ongoing dermatitis can be due to the mite, the scratching, irritation of topical treatment, or other factors. Persistently itchy papules, nodules and eczematous plaques could be treated with frequent applications of emollients and mild topical corticosteroids once or twice daily. Incorrect diagnosis, in addition, scabies scars and scabies marks may be prolonged or marked, particularly if the individual scratches these areas vigorously.
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