Chronic constipation

Most Indian patients describe constipation as not going daily. That is not what the word means clinically, and the difference matters, because many people take remedies for years for a bowel that is working normally.

Normal frequency spans three times a day to three times a week. Constipation is defined by difficulty rather than the calendar: fewer than three spontaneous movements a week, straining on at least a quarter of occasions, hard or lumpy stool (types 1 and 2 on the Bristol chart), a sense of incomplete emptying, a feeling of blockage at the exit, or needing manual help. Chronic constipation is that picture running for months. Daily is not the standard; comfortable and complete is.

It helps to know what the colon is doing. Contents arrive liquid and are moved along by waves of muscle contraction while water is absorbed. Larger propulsive waves follow waking and eating — the gastrocolic reflex, which is why the urge so often arrives after breakfast. When stool reaches the rectum, stretch produces the urge. Passing it is a coordinated act: the pelvic floor and puborectalis relax, straightening the angle of the rectum, the sphincter opens, and abdominal pressure rises.

Three quite different faults can interrupt this, and they call for different treatment.

Normal-transit constipation is the commonest. Contents move at a normal speed, but stool is hard or the perception of difficulty is heightened. Fibre, fluid and routine help here.

Slow-transit constipation means the colon is genuinely sluggish. Movements are infrequent, urges are rare, and fibre alone often disappoints.

Defecatory disorder, also called pelvic floor dyssynergia, is the one repeatedly missed. The pelvic floor contracts at the moment it needs to relax, so the exit stays closed while the person pushes harder. This is why someone can take laxative after laxative and still strain. It affects a substantial minority of people referred with stubborn constipation, and it responds to retraining rather than to more fibre.

Constipation can also be secondary to something else: an underactive thyroid, long-standing diabetes, a high calcium or low potassium, pregnancy, or a medicine. Iron supplements, calcium-channel blockers such as amlodipine, opioids including the codeine in many cough syrups, anticholinergics, some antidepressants and aluminium-containing antacids are common culprits, and a medicine review answers this faster than any test.

ⓘThis information is educational and not a diagnosis.

Describing the pattern precisely is more useful than the word itself, because frequency is only one element. Hard, pellet-like stool, straining that takes minutes, a sense of not having finished, a feeling of obstruction at the exit, and the need to press around the anus or vagina all belong in the description, and each points somewhere slightly different.

Two clusters are worth separating. Infrequent movements with little urge, and no great struggle once it comes, suggest slow transit. Regular urges with prolonged straining, incomplete emptying and manual manoeuvres suggest the exit rather than the pipeline — the defecatory disorder above.

Bloating deserves proper attention here, because it is often the symptom people mind most. Slower transit gives colonic bacteria more time to ferment residue, which increases gas, and a loaded colon has less room to hold it. Distension typically builds through the day and settles overnight. There is a mechanical contribution too: as the gut distends, the diaphragm descends and the abdominal wall relaxes rather than tightening, so the abdomen protrudes far more than the volume of gas alone would explain. Bloating often eases as emptying improves. Where it does not, an overlap with irritable bowel syndrome is worth considering, since constipation-predominant IBS and functional constipation share most of their features and differ mainly in how much pain accompanies them.

Clues that something else is driving it are worth noticing. Cold intolerance, weight gain, dry skin, hair fall and heavy periods point towards the thyroid. A new medicine started around the time things changed points at itself. A pattern that has altered after years of stability deserves attention rather than a stronger remedy.

The features listed below sit outside ordinary constipation. They do not mean something serious is present, but they do mean the cause is worth establishing before treating.

For most people under 45 with a long-standing pattern and no warning features, constipation is diagnosed clinically and needs very little testing. The history does most of the work, and a careful medicine review does much of the rest.

Blood tests have a modest, well-defined role: thyroid function, glucose or HbA1c, calcium, potassium and a full blood count. These are inexpensive at any Indian laboratory and worth doing once, particularly where the pattern is new. An underactive thyroid is a common and easily missed contributor.

Examination matters more than it is given credit for. A digital rectal examination, done gently and with explanation, identifies a hard-loaded rectum, a fissure, haemorrhoids and — importantly — a pelvic floor that tightens rather than relaxes on pushing. Skipping it is the commonest reason a defecatory disorder is missed for years.

Where straining and incomplete emptying dominate, or where sensible measures have failed, anorectal manometry with a balloon expulsion test settles the question. The balloon test is simple: a small water-filled balloon in the rectum that cannot be expelled within a minute or so points strongly to a coordination problem. These studies sit in larger gastroenterology units, so access varies between a metro and a district town.

A colonic transit study follows that, not the other way round, because slow transit and a blocked exit look similar from outside and the treatments differ entirely.

Colonoscopy is reserved for warning features, first onset after 45, or a family history of bowel cancer. Constipation alone, in a younger person with a stable pattern, is rarely a reason for it.

Most chronic constipation improves with routine, food and — where needed — a medicine whose mechanism is understood rather than one picked off a shelf.

Timing and the gastrocolic reflex. The colon's strongest propulsive activity follows waking and eating. Sitting on the toilet twenty to thirty minutes after breakfast, unhurried and without a phone, uses that reflex rather than fighting it. Five to ten minutes is enough; prolonged sitting and straining does harm.

Posture. Here Indian toilets have a genuine advantage. Squatting flexes the hips sharply, which relaxes the puborectalis muscle and straightens the anorectal angle, so less pushing is required. On a Western toilet, a small footstool raising the knees above the hips reproduces much of that effect. It costs almost nothing and helps a surprising number of people.

Answering the urge. Ignoring the signal is a real and under-recognised cause. Hostel and PG bathrooms, office toilets, long commutes, travel and the reluctance many women feel about public facilities all lead to holding on. Deferred urges blunt rectal sensation over time, and stool that stays longer becomes harder. Rebuilding a predictable morning window at home is often the most effective single change.

Fibre, with the distinction that matters. Soluble fibre — psyllium husk, oats, whole dals, fruit, methi and flax seed — holds water and softens stool. Insoluble fibre, mainly wheat bran, adds bulk and speeds transit but ferments in a way that commonly worsens bloating and cramping. The Indian plate varies enormously: polished rice with a thin dal, or refined atta and maida, provides little, while a household eating whole dals, plenty of sabzi and fruit provides a great deal. Increasing intake gradually over two to three weeks, alongside fluid, avoids the bloating that makes people abandon it in week one.

Fluid and movement. Extra fluid helps where intake is genuinely low — which is common in hot months and in physical work — and does little where it is already adequate. Regular walking and general activity modestly improve transit and are worth doing for other reasons anyway.

Traditional remedies, honestly. Isabgol is psyllium, a well-evidenced bulk former and a reasonable long-term option taken with enough water. Triphala has some trial support and contains haritaki, which has mild stimulant activity. Castor oil is a potent stimulant that tends to cramp and is unsuited to regular use. Hot water with lemon, and ghee in milk, are harmless and mostly act as fluid and routine. The nightly senna churna is the one worth thinking about — less because it damages the bowel, which the evidence does not support, than because taking it for a decade usually means the reason was left unestablished.

What the laxative classes actually do. Bulk-forming agents hold water in the stool. Osmotic agents draw water into the bowel: macrogol or PEG does this without being fermented, while lactulose is broken down by colonic bacteria, which is precisely why it produces gas and bloating in so many people. Stimulants such as senna and bisacodyl increase propulsive contractions and secretion. Newer secretagogues and prokinetic agents acting on serotonin receptors work differently again and are used in resistant cases. This explains how they differ; it is not a suggestion to try one, since which fits your situation depends on the subtype and is a prescribing decision.

Retraining for a defecatory disorder. Biofeedback therapy teaches the pelvic floor to relax on pushing, usually across four to six sessions with a trained therapist. In trials it outperforms laxatives for this subtype by a wide margin. Availability in India is limited but growing, and worth asking about where straining dominates.

Constipation is one of the conditions where the single most valuable step is naming the subtype. Fibre, fluid and routine will settle a normal-transit pattern. They will not settle a pelvic floor that tightens on pushing, and continuing to escalate them is what leads to a decade of nightly churna and no answer.

The Learning Session below covers practical gut symptom management in a small group — how to keep a stool diary that tells you something useful, and how to build a morning routine that survives shift work and travel.

If straining has been the story for years, if a medicine may be contributing, or if any of the features above apply, that is a conversation for a consultation.