Asked May 13, 2019

What are cellulitis, myositis and necrotizing fasciitis?


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The invasion of microbes on the skin and its underlying soft tissues are referred to as skin and soft tissue infections (SSTIs). This includes infection of the skin, fascia, subcutaneous tissues, muscles, and connective tissues such as ligaments and tendons respectively. A wide spectrum of clinical presentation is involved in the SSTIs, ranging from simple cellulitis to rapidly progressive necrotizing fasciitis. In general, the SSTIs are classified into two categories, namely, purulent and non-purulent infections. The condition of carbuncles, furuncles, and abscesses are examples of purulent infections. Cellulitis, erysipelas, and necrotizing fasciitis are some examples of non-purulent infections.

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It is the most common bacterial skin infection which typically occurs in deeper skin layers. The possible signs and symptoms of this infection include fever, redness, tenderness, swelling, warmth, blisters, red spots, and skin dimpling. The most common cause of this infection is the entry of bacteria (most commonly Staphylococcus and Streptococcus) into the disrupted areas of the skin such as breaks, punctured wounds, recent surgery, dermatitis, or cracks. The complication of this infection involves spreading of infection into the bloodstream or other body tissues. It is not a contagious disease and is treated with intravenous and oral antibiotics.


A condition of inflammation in muscles is referred to as myositis. Muscle weakness, pain, swelling, and difficulties in locomotion are the most common symptoms of this condition. It occurs due to infection, injury, or autoimmune disease. Polymyositis and dermatomyositis are the most common types of myositis. The former type is characterized ...

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