Hegde Hospital

What is Fistula in Ano? Causes, Symptoms, and Diagnosis

Fistula in Ano

Synopsis

Fistula in Ano is a medical condition that affects the anal region, causing discomfort and sometimes severe pain. It involves an abnormal tunnel or passage that forms between the anal canal and the skin around the anus. This condition is often a result of an abscess (a collection of pus) that did not heal properly, leading to the formation of a fistula. In this guide, we will explore the causes, symptoms, and diagnostic process for Fistula in Ano, helping you understand this condition better.

What is Fistula in Ano?

A Fistula in Ano is a small tunnel that connects the inside of the anus or rectum to the surrounding skin. This condition occurs when an anal abscess — a painful collection of pus caused by infection — fails to heal properly. The result is the formation of a fistula, which can cause recurrent infections, pain, and other complications. Fistula in Ano can vary in severity, ranging from a small, simple tract to a complex fistula with multiple branches.

Causes if Fistula in Ano

The most common cause of Fistula in Ano is an infection or abscess that does not heal completely. Some of the main causes and risk factors include:

  1. Anal Abscess: The majority of Fistulas in Ano develop from an anal abscess, which occurs when an infection develops in one of the small glands in the anus. The infection can spread, creating a passage between the infected gland and the skin.
  2. Crohn’s Disease: This chronic inflammatory bowel disease can lead to the development of anal fistulas due to inflammation in the intestines and rectum.
  3. Trauma or Injury: Injuries to the anal region, such as those caused by surgery or childbirth, can lead to the formation of a fistula.
  4. Sexually Transmitted Infections (STIs): Certain STIs can cause infections in the anal region, leading to the formation of an anal fistula.
  5. Other Risk Factors: Conditions like tuberculosis, cancer, or other infections that affect the rectum and anus can also increase the risk of developing Fistula in Ano.

Symptoms

The symptoms of Fistula in Ano can vary depending on the severity of the condition. Common symptoms include:

  • Pain: Pain or discomfort around the anus, especially when sitting or during bowel movements.
  • Swelling and Redness: Swelling or redness around the anal opening, often caused by infection.
  • Pus or Bleeding: Discharge of pus or blood from the opening of the fistula.
  • Itching or Irritation: Constant itching or irritation around the anus.
  • Fever: In some cases, fever may occur if an infection is present.

How it is Diagnosed?

If you suspect that you have a Fistula in Ano, it is important to consult a healthcare professional who can evaluate your symptoms and provide an accurate diagnosis. The diagnostic process typically involves the following steps:

  1. Physical Examination: The doctor will perform a thorough physical examination, including inspecting the anal region for visible signs of a fistula, abscess, or swelling.
  2. Digital Rectal Exam (DRE): This examination involves the doctor inserting a finger into the rectum to feel for any abnormalities, such as a fistula or an abscess.
  3. Imaging Tests: In more complex cases, imaging tests such as an MRI or Endoanal Ultrasound may be used to assess the fistula’s location and structure. These tests help the doctor determine the type and extent of the fistula.
  4. Fistulography: This diagnostic procedure involves injecting a contrast dye into the fistula and taking X-rays to visualize the exact path of the fistula.

A Word From Hegde Fertility

Fistula in Ano is a painful and often recurring condition that can severely impact the quality of life. Understanding the causes, symptoms, and diagnostic procedures is crucial for early intervention and effective treatment. If you are experiencing symptoms of Fistula in Ano, it is important to seek medical advice promptly to avoid complications and find the most suitable treatment plan.