For standard cases of cellulitis, physicians typically prescribe the antibiotics dicloxacillin or cephalexin, which require multiple daily doses, according to The Merck Manual. Levofloxacin or moxifloxacin is given if a single daily dose is preferable. Clindamycin, clarithromycin or azithromycin may be recommended for patients with penicillin allergies.
Cellulitis is a bacterial infection of the skin and underlying tissue, states The Merck Manual. It typically responds well to antibiotics. However, if the infection is not treated promptly, it becomes very dangerous, spreading to the lymph nodes and bloodstream, Mayo Clinic explains. Symptoms include redness, swelling and pain. The skin is often warm to the touch, and some patients may have a fever. As the fever develops, red spots or small blisters sometimes form.