Cellulitis in Dialysis Patients

Risk Factors and Pathogenesis

Approximately 20% of necrotizing fasciitis cases present without any visible skin lesion, and cellulitis commonly develops through mechanisms beyond obvious skin breaks, particularly in dialysis patients with diabetes and hypertension 1
Peripheral neuropathy causes unattended minor injuries, creating microscopic portals of entry for infection in dialysis patients with diabetes 2, 3, 4
Autonomic neuropathy leads to deficient sweating and dry, cracking skin, providing bacterial entry points even without visible wounds in dialysis patients 2, 3, 5
Vascular insufficiency impairs tissue viability and neutrophil delivery, making even trivial breaks susceptible to infection in dialysis patients 2, 3, 5
Hyperglycemia causes impaired neutrophil function and wound healing through advanced glycation end products in dialysis patients with diabetes 2, 3, 5

Erythema, warmth, swelling, and pain are cardinal signs of inflammation in cellulitis, with at least two signs typically present 1, 6, 7
A wooden-hard feel of subcutaneous tissues, skin discoloration, gangrene, or anesthesia of involved skin suggests necrotizing fasciitis 1
Systemic toxicity with high fever, disorientation, or lethargy signals severe infection requiring urgent intervention in dialysis patients 1, 8

Empiric antibiotic coverage should target streptococci and S. aureus in dialysis patients with cellulitis, with consideration of MRSA coverage based on local prevalence and patient risk factors 2, 3, 5
Addressing underlying predisposing factors, such as optimizing volume status, reducing edema, and improving glycemic control, is essential in managing cellulitis in dialysis patients 1, 2, 3, 5
Prophylactic antibiotics, such as monthly intramuscular benzathine penicillin or oral penicillin V, may be reasonable for preventing recurrent streptococcal episodes in dialysis patients 1