<prompt> A child was brought to OPD with red follicular hyperkeratotic papules over knee.These are areas of normal skin in between.The child also has thickening of palms soles.The most likely diagnosis isPityriasis roseaLichen nitidusPityriasis rubra pilarisLichen planus.  <response>: Red follicular hyperkeratotic lesions with islands of sparing and keratodermathickened palms soles points out to the diagnosis of Pityriasis rubra pilaris. 