Final answer:
Excoriations on the skin of a patient with CKD receiving dialysis can be caused by dry skin, vascular calcifications, and uremic crystallization from high BUN.
Step-by-step explanation:
Excoriations on the skin of a patient with Chronic Kidney Disease (CKD) receiving dialysis can be attributed to several pathophysiologic changes in CKD. These changes include:
- Dry skin: CKD can lead to dry skin due to reduced oil and sweat gland function.
- Vascular calcifications: Calcifications in the blood vessels can disrupt blood flow and impair skin health.
- Uremic crystallization from high BUN: Uremic toxins, such as urea, can accumulate in the blood and lead to skin changes, including excoriations.