• An acute spreading bacterial infection below the
surface of the skin characterized by redness
(erythema), warmth, swelling, and pain.
• Cellulitis occurs when an entry point through
normal skin barriers allows bacteria to enter
and release their toxins in the subcutaneous
• Break in the skin from an abrasion, a cut, or a
• Local trauma, such as an animal bite.
• Bacteremic spread of infection - bacteria arriving
from a distant source via the bloodstream.
Staphylococcus aureus and streptococci are usual
• Break in the skin, such as a fissure, cut, laceration,
insect bite, or puncture wound causes entry of
bacteria into the subcutaneous tissue.
• Deep inflammation of subcutaneous tissue from
enzymes produced by bacteria.
Signs And Symptoms
• Local tenderness and pain
• Regional lymphnodes may also be tender and
• History collection
• Physical examination
• Culture and sensitivity
• Mild cases of cellulitis can be treated on an
outpatient basis with oral antibiotic therapy with
Dicloxacillin, Amoxicillin, or Cephalexin
• If the cellulitis is severe, the patient is hospitalized
and treated with intravenous antibiotics for at least
7 to 14 days.
• Immobilize the part and elevate the extremity above
the level of heart
• Provide moist heat to promote wound healing
• Blood infection (septicaemia)
• Bone infection (osteomyelitis)
• Inflammation of the lymph vessels (lymphangitis)
• Inflammation of the heart (endocarditis)
• Tissue death (gangrene)