Perianal Cellulitis

Definition of Perianal Cellulitis

Cellulitis is an inflammation of the subcutaneous fat characterized by redness, swelling, pain and warmth. In this article we will speak about Perianal cellulitis. This type of  infection appears around the anal orifice and can be very unpleasant. This medical condition affects people of all ages, even children, and is more common in boys than girls.

Symptoms and Signs

Perianal cellulitis is characterized by red skin around the anus. Symptoms and also signs which indicate that you are dealing with perianal cellulitis are:

  • Blood in the stool,
  • Painful bowel movements ,
  • Scratching around the anus and
  • Tenderness.

Individuals with infection do not have body aches, fever, or fatigue attributed to other types of cellulitis. Some people may experience a sore throat prior to this medical condition.

Causes of Perianal Cellulitis

Inflammation in the perianal region connected with this type of infection is mostly caused by several types of bacteria. The most common one is group A Streptococcus bacteria. This bacteria is common on the skin and in the throat. Other types of bacteria which cause cellulitis is bacteria Staphylococcus aureus. The type of bacteria is not connected with whether you will get perianal or another kind of cellulitis.

Risk Factors

Human skin tissue is  protected from inflammation or infection in normal body conditions. But in case of an insect bite, a cut or any other injury several types of bacteria can find a way to get into the skin and spread deeper in  tissue, sometimes causing infection. Any breaks in the skin, surgical wounds , blisters, burns or insect bites should be protected until healed.
Other predisposing factors that can cause perianal cellulitis are: poor hygiene, hot and humid weather, abrasions, malnutrition, over- crowded living conditions, comorbid conditions, atopic dermatitis, dialysis etc.


In case of perianal cellulitis, a doctor will begin the diagnosis by reviewing and asking a number of questions regarding your medical history. After that, physical exams and blood tests usually follow. The skin conditions are similar to other medical conditions, which makes it difficult to distinguish. Its manifestations are similar to psoriasis, yeast infection, inflammatory bowel disease (IBD), pinworm contagion and child abuse. Prior to making a perianal diagnosis medical adviser will take all these circumstances into considerations.


Certainly the best way to treat perianal cellulitis is to treat the affected area and at the same time the factors that would increase the probability of recurrence.
Doctors will prescribe antibiotics to treat infection, which can be given orally or topically (IV in serious case of infection). Topical antibiotics should provide relief. Medical researches has shown that up to 40 % of individuals who receive perianal cellulitis treatment will experience a recurrence. Consequently, doctors may prescribe a follow-up therapy for up to 18 months for people who continue to get perianal cellulitis. As you see, perianal cellulitis is not a mild condition and must be diagnosed in time, so be sure to get a professional opinion.

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