Treatment of Scrotal Cellulitis

First-Line Antibiotic Selection

The American College of Physicians and Infectious Diseases Society of America recommends penicillinase-resistant semisynthetic penicillins or first-generation cephalosporins as first-line agents for cellulitis, providing effective coverage against both streptococci and staphylococci 1, 2
Amoxicillin-clavulanate is an acceptable alternative first-line option, particularly if there is concern for beta-lactamase-producing organisms or recent traumatic wounds 2

A 5-7 day course is sufficient if clinical improvement occurs, with evidence showing that 5-6 days is as effective as 10 days for uncomplicated cellulitis 1, 2
Extend treatment duration only if the infection has not improved within this timeframe 2

MRSA is an unusual cause of typical cellulitis and routine coverage is unnecessary 1, 2
Add MRSA-active antibiotics only if specific risk factors are present, such as penetrating trauma, purulent drainage, or evidence of MRSA infection at another site 1, 2

Clindamycin 300-450 mg orally three times daily provides coverage for both streptococci and MRSA 1, 2
Trimethoprim-sulfamethoxazole (TMP-SMX) 1-2 double-strength tablets twice daily PLUS a beta-lactam is an alternative regimen 1, 2

Clindamycin is the preferred alternative for penicillin-allergic patients, as 99.5% of S. pyogenes strains remain susceptible 2

Scrotal elevation and bed rest are essential until fever and local inflammation subside 3
Treat predisposing conditions such as fungal infections, trauma, or dermatitis 2

Re-evaluate diagnosis and therapy if no improvement occurs within 3 days, and strongly consider hospitalization 3

Do not routinely add MRSA coverage for typical cellulitis without specific risk factors, as this promotes unnecessary broad-spectrum antibiotic use 1, 2