Why it happens:
Swollen veins (cushions) in or around the anus caused by constipation, straining, pregnancy, obesity, or prolonged sitting.
Symptoms:
Diagnosis:
Physical exam, anoscopy, or proctoscopy to determine the grade (1–4).
Treatment: see Haemorrhoids tab for all treatment options.
Why it happens:
A small tear in the anal lining, often from passing hard stools or chronic constipation.
Symptoms:
Diagnosis:
Visual examination by a specialist.
Treatment:
Why it happens: An abnormal tunnel forms between the anal canal and the skin, usually following an infection or abscess (90% result from non-specific cryptoglandular infection).
Symptoms:
Diagnosis:
Physical examination, MRI, or endoanal ultrasound.
Treatment:
Why it happens:
Small growths inside the anal canal, sometimes linked to inflammation or colon polyps. May carry a small risk of malignancy.
Symptoms:
Diagnosis:
Detected during proctoscopy, sigmoidoscopy, or colonoscopy.
Treatment:
Why it happens:
Soft, flesh-colored growths around the anus might develop due to viral infection (Herpes simplex virus, HPV Human Papilloma Virus, molluscum contagiosum, HIV) or anal contact. Sexually transmitted diseases need to be taken into account. Sometimes they are only residual external hemorrhoidal skin tags – therefore expert opinion needed to achieve differential diagnosis.
Symptoms:
Diagnosis:
Visual inspection during examination. Biopsy to exclude condyloma or other diseases. Dermatology opinion. Gynecology opinion if needed.
Treatment:
A painful collection of pus that forms due to infection in anal glands. Depending on the spread, it may extend into deeper spaces like ischiorectal or horseshoe configurations.
Why it happens:
Usually cryptoglandular infection, Crohn’s disease, or untreated anorectal inflammation.
Symptoms:
Treatment:
Urgent incision and drainage, or imaging-guided aspiration. Delayed treatment may lead to sepsis, prolonged hospitalization, or the formation of an anal fistula.
What it is:
A collection of pus caused by gland infection in the anal canal. It may spread into deeper spaces such as the ischiorectal or intersphincteric compartments.
Why it happens:
Usually due to cryptoglandular infections, Crohn’s disease, or untreated fissures.
Symptoms:
Treatment:
Urgent drainage is required. Failure to treat early can lead to chronic anal fistula formation.
These two conditions are often confused, even in clinical settings. Why confusion happens: Many patients (and even clinicians) confuse these two. A pilonidal sinus is a chronic condition, whereas a pilonidal abscess is an acute infection.
A small tract under the skin near the coccyx, caused by trapped hair and chronic inflammation.
Symptoms:
Pilonidal Abscess (Acute Condition)
A painful abscess filled with pus, around the tailbone area.
Symptoms:
Treatment for Both: