Q. A 10-year-old girl is brought to the emergency department by her mother for the sudden onset of a body rash from yesterday. The mother says that she initially noticed the rash on the child’s trunk and forearms and now rapidly spreading over to the legs and face. The rash is not painful or itchy. Her past history shows that she has recently recovered from a streptococcal throat infection after taking antibiotics, 2 weeks ago. Family history is insignificant. Her temperature is 98.6°F (37°C), heart rate is 92/min, respiratory rate is 16/minute and BP is 100/80 mm of Hg. Physical examination shows an active, alert child with body rash over the trunk, neck, both upper limbs, and thighs. Detailed skin examination shows numerous, discrete, droplike papules with a salmon-pink hue and fine scales on the bigger mature lesions. The rest of the examination is unremarkable. Skin biopsy shows hyperkeratosis with foci of parakeratosis and capillary dilatation with edema in the upper dermis. Based on these findings, what is the most likely best next step in this patient’s management?