Cellulitis

Call the process nonpurulent cellulitis only when there is diffuse spreading inflammation without purulent drainage, exudate, or an associated abscess. A furuncle, septic bursa, or skin abscess with surrounding erythema requires source control of the suppurative focus rather than treatment as uncomplicated cellulitis. Oxford Academic+1Oxford AcademicClinical Practice Guidelines by the Infectious Diseases Society ...IDSAIDSA 2014 Guidelines for the Diagnosis and Management of Skin and Soft Tissue Infections

Look specifically for fluctuance, spontaneous purulent drainage, focal pointing, or a palpable fluid-filled cavity. When findings are equivocal, perform point-of-care ultrasound: superficial abscess is best assessed with ultrasound, and dynamic compression plus color Doppler can help define a drainable collection and surrounding hyperemia. CDC+2CDCClinical Overview of Methicillin-resistant Staphylococcus ...pubs rsnaMusculoskeletal Infections: US ManifestationsacepTHE 2024 LLSA LITERATURE REVIEW

Do not allow an apparently uncomplicated presentation to delay escalation when pain, toxicity, progression, or examination raises concern for deep infection. Necrotizing soft-tissue infections commonly mimic cellulitis or abscess; obtain urgent surgical assessment rather than relying on imaging to exclude a clinically suspected necrotizing process. JAMA+1JAMANecrotizing Soft Tissue Infection Masquerading as ...Oxford AcademicDiagnostic strategies in necrotizing soft tissue infections: from ...

For presumed uncomplicated cellulitis, routine blood cultures and routine imaging have limited clinical usefulness; reserve them for patients with systemic illness, atypical findings, failure of initial management, or concern for a deeper process. CT is useful when deep complications or the involved anatomic compartment must be identified. JAMA+1JAMAClinical Usefulness of Imaging and Blood Cultures ...pubs rsnaMusculoskeletal Infection: Role of CT in the Emergency ...

Systemic signs that support escalation in purulent SSTI include temperature greater than 38°C or less than 36°C, tachycardia, tachypnea, white blood cell count greater than 12,000/µL, or white blood cell count less than 400/µL. These findings support culture of purulent material and empiric systemic anti-staphylococcal treatment in addition to drainage. publications aappublications aapClinical Practice Guidelines for Skin and Soft Tissue Infections | AAP Grand Rounds | American Academy of Pediatrics

Consider hospital-based management for patients who are severely unwell, frail, immunocompromised, elderly, very young, or who have facial cellulitis. Patients who can take oral therapy and lack these high-risk features can usually be managed as outpatients with explicit reassessment instructions. cks nice org uk+2cks nice org ukCellulitis - acute | Health topics A to Z - CKS - NICEcks nice org ukScenario: Management of acute cellulitis - CKS - NICEacepTHE 2024 LLSA LITERATURE REVIEW

At follow-up, judge response clinically rather than by a microbiologic endpoint, because pathogen recovery in nonpurulent cellulitis is uncommon, with a reported clinical isolation rate below 20%. Worsening or no improvement by 48 hours should trigger re-examination for occult abscess, an incorrect diagnosis, resistant pathogen, nonadherence, or deep infection. IDSA+1IDSAIDSA 2014 Guidelines for the Diagnosis and Management of Skin and Soft Tissue InfectionsCDCClinical Overview of Methicillin-resistant Staphylococcus ...

For mild nonpurulent cellulitis, select an oral agent active against streptococci. Recommended options include penicillin V potassium, a cephalosporin, dicloxacillin, or clindamycin; penicillin, amoxicillin, and cephalexin are cited oral options for targeted streptococcal coverage. Oxford Academic+2Oxford Academic2014 Update by the Infectious Diseases Society of AmericaccjmCellulitis: A Review of Current Practice Guidelines and ...acepTHE 2024 LLSA LITERATURE REVIEW

For purulent infection or an abscess requiring adjunctive antibiotics, choose MRSA-active therapy such as trimethoprim-sulfamethoxazole, doxycycline, or clindamycin. CDC advises considering MRSA particularly for purulent, fluctuant, or fluid-filled skin infections. ScienceDirect+3ScienceDirectClinical outcomes in patients hospitalized with cellulitis treated with oral clindamycin and trimethoprim/sulfamethoxazole: The role of weight-based dosingScienceDirectClinical outcomes in patients hospitalized with cellulitis treated with oral clindamycin and trimethoprim/sulfamethoxazole: The role of weight-based dosing - ScienceDirectCDCClinical Overview of Methicillin-resistant Staphylococcus ...acepTHE 2024 LLSA LITERATURE REVIEW

Use clindamycin when it is selected at 300 to 450 mg orally three or four times daily; use trimethoprim-sulfamethoxazole at one to two double-strength tablets orally twice daily. In hospitalized cellulitis cohorts, inadequate dosing of clindamycin or trimethoprim-sulfamethoxazole was independently associated with clinical failure; obesity may require attention to dose adequacy. ScienceDirect+1ScienceDirectClinical outcomes in patients hospitalized with cellulitis treated with oral clindamycin and trimethoprim/sulfamethoxazole: The role of weight-based dosingScienceDirectClinical outcomes in patients hospitalized with cellulitis treated with oral clindamycin and trimethoprim/sulfamethoxazole: The role of weight-based dosing - ScienceDirect

Do not add trimethoprim-sulfamethoxazole routinely to cephalexin for uncomplicated nonpurulent cellulitis solely to broaden MRSA coverage. Typical nonpurulent cellulitis is usually due to beta-hemolytic streptococci, while MRSA accounts for a small proportion of nonpurulent cases in the cited emergency medicine review. JAMA+2JAMAEffect of Cephalexin Plus Trimethoprim-Sulfamethoxazole ...Oxford Academic2014 Update by the Infectious Diseases Society of AmericaacepTHE 2024 LLSA LITERATURE REVIEW

Avoid a single empiric vancomycin dose before discharge for a hemodynamically stable patient with nonpurulent cellulitis. Vancomycin trough targets of 10 to 15 µg/mL are achieved after four to five doses, making one emergency department dose unlikely to have meaningful clinical effect while adding unnecessary broad-spectrum exposure and monitoring burden. ScienceDirectScienceDirectReduction of Inappropriate Antibiotic Use and Improved Outcomes by Implementation of an Algorithm-Based Clinical Guideline for Nonpurulent Skin and Soft Tissue Infections

For a mild purulent SSTI, incision and drainage alone is often sufficient. Add culture and empiric systemic anti-staphylococcal antibiotics when the patient has fever above 38°C or below 36°C, tachycardia, tachypnea, or marked leukocyte abnormality. publications aappublications aapClinical Practice Guidelines for Skin and Soft Tissue Infections | AAP Grand Rounds | American Academy of Pediatrics

When no clinical improvement occurs after initial therapy, repeat examination and use ultrasound to look for a previously occult collection. The clinical importance of this step is underscored by trials of nonpurulent cellulitis in which some apparent treatment failures may have represented small abscesses missed despite ultrasound screening. JAMA+1JAMAEffect of Cephalexin Plus Trimethoprim-Sulfamethoxazole ...Oxford AcademicClinical Practice Guidelines by the Infectious Diseases Society ...

Escalate to emergency surgical evaluation when the course is disproportionate to apparent superficial infection or when necrotizing soft-tissue infection remains plausible. NSTI may present as an apparently benign cellulitis or abscess, so a reassuring initial label should not override progressive clinical concern. JAMA+1JAMANecrotizing Soft Tissue Infection Masquerading as ...Oxford AcademicDiagnostic strategies in necrotizing soft tissue infections: from ...

Document the lesion boundary at the initial visit and reassess symptoms, systemic signs, and spread within 48 hours. Lack of improvement should trigger reassessment for abscess, deeper infection, or a different diagnosis rather than automatic prolongation or broadening of therapy. CDC+2CDCClinical Overview of Methicillin-resistant Staphylococcus ...pubs rsnaMusculoskeletal Infection: Role of CT in the Emergency ...acepTHE 2024 LLSA LITERATURE REVIEW

For recurrent lower-extremity cellulitis, examine interdigital spaces and nails for tinea pedis or onychomycosis and address chronic edema, obesity, and lymphatic dysfunction when present. Athlete's foot has been associated with lower-extremity cellulitis, and obesity can impair lymphatic fluid transport. ccjmccjmRecurrent Cellulitis: Who is at Risk and How Effective is Antibiotic P | IJGM | Dove Medical Press

In patients with severe infection that fails initial treatment, obtain culture and susceptibility testing when a recoverable purulent focus is present and use results to direct therapy. This is increasingly relevant because resistance among S. aureus to methicillin, erythromycin, clindamycin, tetracycline, and TMP-SMX, and among streptococci to erythromycin and clindamycin, has been reported. IDSA+2IDSAIDSA 2014 Guidelines for the Diagnosis and Management of Skin and Soft Tissue InfectionsIDSASkin and Soft Tissue InfectionsCDCClinical Overview of Methicillin-resistant Staphylococcus ...