Cellulitis

Cellulitis is acute spreading bacterial infection of dermis/subcutaneous tissue (beta-hemolytic strep/S. aureus), presenting with warm, erythematous, tender, ill-defined swelling, fever, and lymphangitis. Treatment: oral anti-staph/strep antibiotics (cephalexin/clindamycin/dicloxacillin) for uncomplicated; IV antibiotics (cefazolin/ceftriaxone/vancomycin if MRSA) for systemic/toxic/extensive; elevate limb; warm compresses; treat portal of entry (tinea pedis/wound/ulcer); monitor for abscess (US-guided drainage)/necrotizing fasciitis; follow-up in 48h.

Common Symptoms

Warm erythematous tender swelling; fever; lymphangitis; strep/staph

Causes and Pathogenesis

Bacterial entry through skin break causes spreading dermal/subcutaneous infection.

Treatment

Oral/IV antibiotics; elevation; treat entry; monitor abscess/NF

Preventive Measures

Treat tinea pedis; wound care; manage edema/venous insufficiency.

Department to Visit

It is recommended to visit the Dermatology/Emergency/Infectious-disease department; an appointment can be booked on this platform before the visit.

Warm reminder: The above information is for health science reference only and cannot replace professional medical diagnosis. If you have related symptoms, please seek medical attention at a regular hospital promptly.