Our patient. We prescribed topical 5% permethrin lotion for our patient to apply to her entire body 4 times a week and advised her to wash her clothing and bed linens at 140° F. She was scheduled for biweekly check-ups. We also advised the patient’s family to use the same topical therapy 2 times per week because crusted scabies is highly contagious. One month later, our patient’s lesions had resolved (FIGURE 2).
THE TAKEAWAY
Early diagnosis and treatment of crusted scabies is important, both for the treatment of the patient and to stop the spread of the disease. Although rare, crusted scabies should be included in the differential diagnosis of long-term pruritic papulosquamous diseases, and the possibility of an atypical presentation in all patients should be considered—whether their immunity is compromised or not. Scabies should also be considered in patients with a positive family history of the disease and in those with chronic pruritus that is unresponsive to topical therapies.