Purpuric Edematous Papules in a Man With Prostate Cancer | Synapse
February 27, 2026
Purpuric Edematous Papules in a Man With Prostate Cancer
Key Points
To identify the cause of a tender, pruritic rash in a patient undergoing radiotherapy for prostate cancer.
Clinical examination of the rash on trunk and extremities.
Assessment of patient's medical history including prostate cancer treatment.
Diagnosis based on clinical presentation.
The rash was characterized by purpuric edematous papules.
It was determined to be a dermatitis secondary to radiotherapy.
Patient reported significant tenderness and itching.
Abstract
A man in his 60s undergoing radiotherapy for prostate cancer presented to the dermatology clinic with a 1-week history of a tender, pruritic rash to the trunk and extremities. What is your diagnosis?