Cellulitis is a bacterial infection involving the inner layers of the skin. As signs and symptoms, an painful area of redness increases in size over a few days . The borders of the area of redness are generally not well-demarcated and the skin may be swollen. The area of infection is usually painful. The person may have a fever and myagia.

The legs and face are the most common sites involved. Risk factors include obesity, leg swelling, and old age. The bacteria most commonly involved are streptococci and Staphylococcus aureus.

Treatment is typically with antibiotics taken by mouth, such as cephalexin, amoxicillin or cloxacillin. Around 95% of people are better after 7 to 10 days of treatment. Those with diabetes, however, often have worse outcomes.

Cellulitis is a common disorder, and in the United Kingdom, cellulitis was the reason for 1.6% of admissions to a hospital. Cellulitis in 2015 resulted in about 16,900 deaths worldwide.

Treatment ― OTC Drugs
Advanced cellulitis requires treatment with antibiotics prescribed only by a doctor. If the lesion progresses rapidly and is accompanied by fever and chills, it is advisable to see a doctor as soon as possible.
Applying an over-the-counter antibiotic ointment to early lesions may help. If the ointment is applied too thinly, it may not work at all.

Use OTC pain relievers like acetaminophen to ease the pain.

Keep feet clean and treat athlete's foot because athlete's foot increases the risk of cellulitis.

#First-generation cephalosporins (e.g. Cefradine)
#Bacterial culture
#Third-generation cephalosporins (e.g. Cefditoren Pivoxil)
  • The leg is common location for Cellulitis.
  • Typical case
  • Cellulitis ― healing stage
  • Cellulitis on the left leg. If it spreads widely, high fever can occur, leading to life-threatening septic shock.
  • When the lesion improves, post-inflammatory hyperpigmentation may appear.
  • It can be caused by a wound on the palm.
  • Typical case
  • If a tender erythematous patch spreads quickly, Cellulitis should be suspected.
  • As Cellulitis improves, dead skin cells may peel off, and it may become itchy.
  • Most Cellulitis is accompanied by swelling and erythema in the surrounding area. However, in this exceptional case where there is no surrounding erythema, squamous cell carcinoma should also be suspected.
  • Typical case
  • Healing phase.