An anal fissure is a split in the anal skin, just inside the anus, usually towards the back. The pain of an anal fissure feels like being cut with glass when you have your bowels open and afterwards. It is worse when you have had a hard bowel motion. You may notice some bright red blood on the lavatory paper at the same time. You may be able to feel a small lump alongside the crack; this is a ‘skin tag’.
Anal fissures are most common in teenagers and young adults, often after a period of constipation. Sometimes they follow childbirth. They usually heal on their own, but this often takes several weeks and the scar may split again.
What you can do. Do not feel anxious about the fissure. Although it is horribly painful, it is not a dangerous condition.
Avoid constipation
This is very important. Keep your faces soft by eating lots of bran cereals, fruit and vegetables.
Smear some painkilling gel around the area just before you have your bowels open. You can buy a suitable painkilling gel from a pharmacy; they are sometimes labeled ‘for piles’ or ‘for hemorrhoids’. It will prevent the anus going into a spasm, which can make the problem worse. Do not use the gel at any other time, or for more than 1 week, because you can easily develop an allergy to its ingredients. If you notice soreness and itching, in addition to the sharp pain, it is quite likely that the gel is responsible.
Warm baths twice daily can help, if you have the time. Put a handful of ordinary kitchen salt into the bath.
How your doctor can help:
You should see your doctor if the problem is not improving after 3 weeks. If you feel anxious about this, look at the section on seeing your doctor about an anal problem. For some treatments, your doctor will need to send you to the ‘rectal clinic’ at your local hospital. Some of the treatments your doctor may use are listed below.
Glyceryl trinitrate ointment, applied several times a day, heals about 50% of people (The Surgical Clinics of North America 2010;90:33-44). However, about 1in 4 people using this treatment gets a headache as a side effect.
A gel containing the drug diltiazem, applied twice daily for 6–8 weeks, seems to be as effective as glyceryl trinitrate.
If glyceryl trinitrate or diltiazem do not work for you:
Injections of botulinum toxin (Botox) into the muscle of the anus are a possibility. Botulinum toxin prevents spasm of the muscle, because it blocks transmission of nerve impulses to the muscle. Healing rates are about 69–90%.
The most common treatment (before diltiazem gel and glyceryl trinitrate ointment came on the scene) used to be a small operation under a general anaesthetic. The operation is designed to overcome the spasm of the anal muscle by stretching the anus. The pain relief is dramatic and instantaneous. In the past, this operation could leave you less able to control wind, but this is less likely with a newer type of operation called lateral internal anal sphincterotomy (British Journal of Surgery 2005;92:403–8).
Unfortunately, the fissure comes back within 3–4 months in about one-third of people treated with glyceryl trinitrate or diltiazem, and in about 40% of people after treatment with botulinum toxin (Gastroenterology 2002;123:112–7). Surgery seems to be the best long-term cure and is effective in about 90% of cases.
Herpes virus infection
A herpes virus infection can produce a pain similar to an anal fissure. Herpes can infect the anal area, either spread by the hands from a cold sore on the face, or transmitted as a sexual infection. At the anus, herpes often forms a crack rather than the small ulcers that tend to occur elsewhere. It can occur in individuals who have never had herpes elsewhere. The soreness occurs in episodes, each lasting for a few days. A genitourinary medicine clinic will be able to take a swab to check for the virus if you visit the clinic as soon as an episode starts; if you are worried about the thought of visiting a clinic, take a look at the section on visiting the clinic.
Abscess
An abscess close to the anus produces a throbbing pain that worsens over a few days, and is usually bad enough to disturb your sleep. You may be able to feel a tender swelling in the skin beside the anus, or the abscess may be hidden inside. This is unlikely to go away on its own; it needs to be lanced by a doctor.
Proctalgia fugax
Proctalgia fugax is a severe, cramp-like pain, deep in the anal canal. It usually lasts for a few seconds or minutes, but can sometimes last for up to half an hour. Between attacks there is no pain at all. Most sufferers have only 5 or 6 attacks a year. You may feel a need to defecate urgently, but nothing happens. It may even make you feel dizzy, or give you a headache. It occurs in both men and women. The pain often wakes sufferers at night, and men may have an erection at the same time. Some men experience it after sex. It is a mysterious condition; no one knows what causes it, but it is probably a spasm of the rectal or pelvic floor muscles and does not mean that you have anything seriously wrong. There are various methods of relieving the pain.
Try putting pressure on the perineum (the area between the back passage and the vagina or base of the penis) by sitting on the edge of your bath or on a tennis ball.
Sit in hot water or, alternatively, apply some ice.
Two paracetamol (acetaminophen) tablets and a hot drink may give some relief.
The problem with medications for proctalgia fugax is that the episode is likely to be over before the drugs become active, but medication might be worth trying if your attacks last a long time. The usual treatment is the asthma drug salbutamol, inhaled from a puffer at the start of the attack (Gastroenterology 2006;130:1510–8). This is only available on prescription, for which you would need to see your doctor.
Constipation
Constipation is difficult to define, and what one person regards as constipation, another person may regard as normal. Some people think they are constipated if they do not pass faeces every day, but this is not necessarily the case. We tend to think one bowel motion a day is healthy, but this is because of the way we have trained ourselves. Actually, our bodies are designed to pass faeces more often. Primates such as chimps and monkeys pass soft stools several times a day.
Do you have chronic constipation?
Short-lived episodes of constipation are not unusual for people and do not signify anything is wrong. Such an episode often gets better on its own and is related to recent lifestyle changes, stress or new medication etc. However, chronic constipation is a different condition and may be present if:
· You have to strain to pass faeces at least one time in four
· Your faeces are lumpy or hard at least one time in four
· You feel that you haven’t emptied your bowel completely, at least one time in four
· You pass faeces only once or twice a week (or less)
· You feel like there is a ‘blockage’ when trying to defecate, at least one time in four
· You need to use ‘manual maneuvers’ such as supporting your pelvic floor or using your finger to help evacuation, at least one time in four
If two (or more) of these statements are true and you have had the problem for more than 3 months in the last 12, then you may have chronic constipation.
Constipation
Constipation is difficult to define, and what one person regards as constipation, another person may regard as normal. Some people think they are constipated if they do not pass faeces every day, but this is not necessarily the case. We tend to think one bowel motion a day is healthy, but this is because of the way we have trained ourselves. Actually, our bodies are designed to pass faeces more often. Primates such as chimps and monkeys pass soft stools several times a day.
Do you have chronic constipation?
Short-lived episodes of constipation are not unusual for people and do not signify anything is wrong. Such an episode often gets better on its own and is related to recent lifestyle changes, stress or new medication etc. However, chronic constipation is a different condition and may be present if:
· You have to strain to pass faeces at least one time in four
· Your faeces are lumpy or hard at least one time in four
· You feel that you haven’t emptied your bowel completely, at least one time in four
· You pass faeces only once or twice a week (or less)
· You feel like there is a ‘blockage’ when trying to defecate, at least one time in four
· You need to use ‘manual maneuvers’ such as supporting your pelvic floor or using your finger to help evacuation, at least one time in four
If two (or more) of these statements are true and you have had the problem for more than 3 months in the last 12, then you may have chronic constipation.
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