Chronic renal failure :

Chronic renal failure is commonly associated with intractable pruritus. Pallor, hyperpigmentation and ecchymoses are commonly seen. Rarely it is associated with non-inflammatory blisters, pseudo-porphyria cutanea tarda and cutaneous calcification. Long-standing renal transplant patients often suffer with recurrent viral warts and squamous cell carcinomas due to the immunosuppression.