Diagnosis is usually based on a medical history and physical exam. Blood and skin samples may be taken to confirm the diagnosis and the type of bacteria that is present. A bacterial culture can identify the organism causing the condition and indicate the most effective antibiotic.
Cellulitis treatment usually includes a prescription oral antibiotic. Within three days of starting an antibiotic, let your health care provider know whether the infection is responding to treatment. You'll need to take the antibiotic for the full course, usually 5 to 10 days, even if you start to feel better.
Symptoms typically disappear a few days after you start treatment. You may need to be hospitalized and receive antibiotics through your veins (intravenously) if:
Signs and symptoms don't respond to oral antibiotics
Signs and symptoms are extensive
You have a high fever
