Dr. Luiza Pettinelli — intimate surgery and coloproctology

Anal fissure: specialized diagnosis and treatment

Dr. Luiza Pettinelli · CRM-SP 212.349 · RQE 102.999

Do you feel intense pain during bowel movements? That sharp, cutting pain and burning that lasts for hours after using the bathroom may be an anal fissure. It is treatable — and the sooner, the better.

Dr. Luiza Pettinelli
5,0
★★★★★
171 reviews on Google
Dr. Luiza Pettinelli
What it is

A small tear, a huge pain

An anal fissure is a small tear in the lining of the anal canal. Despite its size, it causes intense pain during and after bowel movements — which can last for hours — and often comes with bleeding.

It is one of the most common causes of anal pain, especially in people who are constipated or strain a lot during bowel movements. Without treatment, it can become chronic.

Pain makes the sphincter contract, which hinders healing and makes the problem worse: a cycle that only breaks with the right treatment.

Main causes

Why a fissure develops

Constipation

Hard stools injure the anal canal as they pass.

Stress and tension

Anxiety increases sphincter tension and makes bowel movements harder.

Postpartum

The strain and trauma of childbirth can cause fissures.

Chronic diarrhea

Constant irritation also damages the anal tissue.

Symptoms

Don't treat pain during bowel movements as normal

Recognizing these signs is the first step. In most cases, a fissure is treated successfully.

Sharp pain

Burning or a cutting sensation during and after bowel movements, lasting minutes or hours.

Bleeding

Bright red blood on the toilet paper, in the stool or in the toilet bowl.

Spasms

Involuntary sphincter contractions that increase pain.

Fear of having a bowel movement

Putting off going to the bathroom out of fear of pain worsens constipation and the problem itself.

Treatment

From relief to a lasting solution

Treatment is personalized according to the severity and duration of symptoms.

Acute phase

Fast relief and healing.

  • Numbing and healing ointments
  • Warm sitz baths
  • Fiber supplementation
  • More fluids

Habits

So it doesn't come back.

  • High-fiber diet
  • Good hydration
  • Relaxation techniques
  • Avoid straining during bowel movements

Medications

They relax the sphincter.

  • Topical nitroglycerin
  • Diltiazem or nifedipine
  • Botulinum toxin (selected cases)

Chronic fissure

A definitive solution.

  • Lateral internal sphincterotomy
  • Local anesthesia or sedation
  • Quick procedure
  • High success rate (over 95%)
Real reviews · Google

Those who got treated and live pain-free again

5,0
★★★★★
171 reviews on Google
★★★★★

“Without a doubt the best proctologist I’ve seen in recent years, and I’ve seen several! She was the only one who made me feel safe and took away my fear of surgery, which, by the way, was the best choice I’ve ever made. I have a whole new life.”

L
Luciana M.Google · 5 months ago
Proctology
★★★★★

“Dr. Luiza is a great professional. I arrived embarrassed and she made me feel completely at ease, explaining everything about my problem. Giving me her full attention.”

C
Cristiano S.Google · 8 months ago
Care
★★★★★

“Super attentive, she welcomed me at the office and listened to my concerns calmly and courteously. She examined me, explained very clearly what it was, solved it quickly and, best of all, the next day it was as if I’d never had any problem at all. I recommend her not only for her professionalism but also for her compassionate care!”

K
Katiuscia F.Google · 1 year ago
Proctology
★★★★★

“An exceptional doctor! After seeing several professionals, she was the only one who truly identified and solved my problem. Competent, attentive and extremely dedicated. I recommend her!”

C
Celia R.Google · 1 year ago
Proctology
★★★★★

“Excellent care from the doctor, above all with a lot of empathy. I felt comfortable talking about intimate matters in a respectful and honest way, and that gave me more confidence to keep taking care of my health the right way!”

A
Andre P.Google · 3 months ago
Care
★★★★★

“From the very first moment, she was extremely attentive, welcoming and professional. She listened to my concerns patiently, asked detailed questions and showed real interest in understanding my history. I felt safe, respected and sure I was in good hands.”

M
Marcela P.Google · 1 year ago
Care
Book your evaluation

Pain during bowel movements is not normal

Discreet, welcoming, judgment-free care. Message the team on WhatsApp and choose the time that works best for you.

Locations

Where Dr. Luiza sees patients

In-person appointments in three cities and online consultations for those who live far away or outside Brazil. All appointments are booked via WhatsApp.

São José do Rio Preto · SP

Office

Av. Pres. Juscelino K. de Oliveira, 1041 — Sala 14
Jardim Pinheiros · CEP 15092-175

Monday to Friday, 9 a.m. to 6 p.m.

Address provided
when booking
São Paulo · city

By appointment only

Consultations and evaluations in São Paulo on scheduled dates. Contact the team to learn the upcoming dates and get the address.

Farroupilha · RS

Clínica Domelle

Rua Rui Barbosa, 53 - A — 3rd floor
Centro · CEP 95170-440