Cellulitis can be treated with either oral or intravenous antibiotics, according to MedicineNet. Depending on the specific bacteria causing the infection, a doctor can prescribe either a derivative of penicillin or another antibiotic that is the most effective.
The first line of treatment for mild cases of cellulitis consists of oral antibiotics targeted at the most probable types of bacteria that may be causing the inflammation, states MedicineNet. If the inflammation persists, the doctor may prescribe intravenous antibiotics or look into other, non-infectious causes for the condition, such as an autoimmune disorder.
Cellulitis is most commonly caused by streptococcus and staphylococcus bacteria, but it can also be caused by methicillin-resistant Staphylococcus aureus, or MRSA; Haemophilus influenzae; pneumococcus; or some Clostridium species of bacteria, as stated by MedicineNet. If left untreated, cellulitis can spread to the bloodstream and cause a major bacterial infection known as sepsis.