dermatologic disorders
Pityriasis Rubra Pilaris
Diagnosis of Pityriasis Rubra Pilaris
Clinical evaluation Sometimes biopsy Diagnosis of pityriasis rubra pilaris is by clinical appearance and may be supported by biopsy. Biopsy is done when the clinical diagnosis is unclear (eg, when the patient is erythrodermic at presentation). Differential diagnosisof pityriasis rubra pilaris includes the following: Seborrheic Dermatitis (in children) Psoriasis (when disease occurs on the scalp, elbows, and knees) 