Management of Skin Infections with Bullae Formation

Initial Assessment and Classification

Skin infections with bullae formation should be evaluated for signs of systemic toxicity, including fever, tachycardia, hypotension, and laboratory abnormalities, according to the Infectious Diseases Society of America 1
Critical warning signs suggesting severe deep soft-tissue infection include pain disproportionate to physical findings, violaceous bullae, cutaneous hemorrhage, skin sloughing, skin anesthesia, rapid progression, and gas in the tissue, as recommended by the Infectious Diseases Society of America 1

Obtain Gram stain and culture of pus or exudates from skin lesions to identify causative organisms, as suggested by the Infectious Diseases Society of America 2
For patients with systemic symptoms or signs of severe infection, blood cultures should be performed, according to the Infectious Diseases Society of America 1
Consider skin biopsy in cases with atypical presentation to rule out autoimmune blistering diseases, as recommended by the British Association of Dermatologists 3, 4
Total body skin examination with attention to all mucous membranes is essential to determine the extent of disease, as suggested by the American Society of Clinical Oncology 5

First-line treatment for mild to moderate bacterial skin infections with bullae includes semi-synthetic penicillin, first-generation cephalosporins, macrolides, or clindamycin, as recommended by the Infectious Diseases Society of America 1
For suspected MRSA, consider trimethoprim-sulfamethoxazole or tetracycline, according to the Infectious Diseases Society of America 1
Hospitalize immediately for parenteral antibiotics and close monitoring for severe infections or those with systemic symptoms, as suggested by the Infectious Diseases Society of America 1
For necrotizing infections with bullae, emergent surgical consultation for debridement is critical, as recommended by the Infectious Diseases Society of America 1, 2
Empiric broad-spectrum antibiotics should be initiated based on Gram stain results, according to the Infectious Diseases Society of America 1
For suspected necrotizing fasciitis with bullae, combination therapy with clindamycin plus penicillin is recommended for group A streptococcal and clostridial infections, as suggested by the Infectious Diseases Society of America 6
For polymicrobial infections, vancomycin plus piperacillin/tazobactam is recommended, according to the Infectious Diseases Society of America 2
For Vibrio vulnificus, doxycycline plus ceftazidime is recommended, as suggested by the Infectious Diseases Society of America 2
For Aeromonas hydrophila, doxycycline plus ciprofloxacin is recommended, according to the Infectious Diseases Society of America 2

Intact bullae should be decompressed by piercing with a sterile needle but leave the blister roof in place as a biological dressing, as recommended by the British Association of Dermatologists 3, 4, 9
Gently cleanse with antimicrobial solution before and after drainage, according to the British Association of Dermatologists 4
Apply bland emollients such as 50% white soft paraffin and 50% liquid paraffin to support barrier function, as suggested by the British Association of Dermatologists 4
For extensive erosions, consider antiseptic baths or antiseptic-containing bath oils, according to the British Association of Dermatologists 3
Non-adherent dressings may be necessary for large areas of erosion, as recommended by the British Association of Dermatologists 4

Monitor closely for signs of secondary infection, which can lead to sepsis, according to the British Association of Dermatologists 4
Daily washing with antibacterial products can decrease bacterial colonization, as suggested by the British Association of Dermatologists 4
Systemic antibiotics should be used if there are local or systemic signs of infection, according to the British Association of Dermatologists 4
Pain control is essential; consider premedication prior to dressing changes, as recommended by the British Association of Dermatologists 4
For severe cases with extensive skin involvement, consider admission to a burn unit for specialized care, according to the American Society of Clinical Oncology 5

Patients treated as outpatients should be reevaluated within 24-48 hours to ensure appropriate response to therapy, as recommended by the Infectious Diseases Society of America 1
For autoimmune blistering diseases, long-term follow-up is needed until complete remission is achieved, according to the British Association of Dermatologists 7
Document the number and location of new blisters to track disease progression, as suggested by the British Association of Dermatologists 4