clinical presentation; cellulitis



Cellulitis is a generally common bacterial infection of the skin and soft tissues under the skin. It occurs when bacteria enter the skin from a break and spread. Finally, infection occurs that can cause swelling, redness, pain, or warmth.


  • The main causative agents are basically bacteria Streptococcus pyogenes and Staphylococcus aureus.
  • The most common bacteria are beta-hemolytic streptococci (groups A, B, C, G, and F).
  • Cellulitis from a dog or cat bite or scratch may be caused by the Pasteurellamultocida bacteria. And has a very short incubation period of only four to 24 hours
  • Aeromonashydrophilia, Vibrio vulnificus, and other bacteria develop it after exposure to freshwater or seawater. 
  • Pseudomonas aeruginosa is bacteria that cause it typically after a puncture wound.
  • Injuries that tear or break the skin.
  • Long-term skin conditions like eczema or psoriasis
  • Bone infections beneath the skin.


  • In some cases cellulitis develops without apparent skin injury. It may be because of microscopic cracks in the skin. It can be inflamed or irritated. Cellulitis may also appear in the skin near ulcers or surgical wounds.
  • In other circumstances, it occurs where there has been no skin break at all, such as with chronic leg swelling (edema).
  • A pre-existing skin infection, such as athlete’s foot (tineapedis) or impetigo can be a risk factor.
  • Diseases of skin such as eczema, psoriasis, or skin damage caused by radiation therapy can lead to it.
  • People who have diabetes or HIV/AIDS( or immuno-suppressing disease) are particularly prone to develop it.
  •  Conditions or diseases such as venous insufficiency, obesity, pregnancy, or surgeries also increase the risk.


  • Cellulitis usually appears as an acute, spreading, poorly demarcated area of erythema.
  • The skin findings in cellulitis follow the classic signs of inflammation: dolor (pain), calor (heat), rubor (erythema), and tumor (swelling).
  • Cellulitis is nearly always unilateral. It is typically found in the lower extremities.


  • Keep good personal hygiene and skin clean.
  • Wear shoes or slippers that fit, with loose cotton socks.
  • Avoid walking barefoot.
  • Wash injured skin with soap and water. Therefore it could heal much fast.
  • If you have a break in the skin, clean it, and apply antibiotic ointment. Cover your wound with a bandage.
  • Apply this until the scab gets form.
  • Have an eye over signs of an infection on it.
  • Take these precautions if you have a condition that can increase the risk of cellulitis:
    • Keep your skin moist to prevent cracking.
    • Wear protective equipment when you play sports.
    • Inspect your feet regularly for signs of any injury or infection.

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