Constipation: Causes, Symptoms, Diagnosis & Treatment

Constipation is a common gastrointestinal problem characterized by infrequent or difficult bowel movements. It occurs when stool moves slowly through the colon, making it hard, dry, and difficult to pass. While occasional constipation is normal, chronic constipation requires evaluation and treatment.

 How Constipation Happens

Normally, food moves through the intestines, water is absorbed, and waste forms stool.
In constipation, excess water is absorbed, making the stool dry and compact.
This leads to:

• Straining

• Hard stools

• Reduced frequency

 Common Causes

Constipation is commonly caused by a low-fiber diet, inadequate fluid intake, and lack of physical activity. Other contributing factors include ignoring the urge to pass stool, stress, certain medications (such as painkillers and antacids), pregnancy, and underlying medical conditions like hypothyroidism or irritable bowel syndrome. 

Lifestyle & Diet

• Low fiber intake

• Inadequate water consumption

• Sedentary lifestyle or lack of exercise

• Ignoring the urge to pass stools

Medical Conditions

1.Hypothyroidism

Slows metabolism and bowel movement

2.Diabetes

Nerve dysfunction affecting gut motility

3.Neurological disorders

Parkinson’s disease, multiple sclerosis

4.IBS-C (IBS with constipation)

Irregular motility & sensitivity

5.Post-pregnancy & aging

Hormonal and muscular changes

Medications

• Iron supplements

• Opioid painkillers

• Antacids containing calcium/aluminum

• Antidepressants

• Antihistamines

 Symptoms

Typical symptoms include passing hard or lumpy stools, straining during bowel movements, reduced frequency of bowel movements (less than three times per week), abdominal discomfort, bloating, and a feeling of incomplete evacuation.

• Less than 3 bowel movements per week

• Hard or lumpy stools

• Painful or strained defecation

• Bloating and abdominal discomfort

• Feeling of incomplete evacuation

 Red flag symptoms needing urgent evaluation:

• Blood in stools

• Persistent vomiting

• Unexplained weight loss

• Severe abdominal pain

• New symptoms in age > 50

 Types of Constipation

Primary (Functional)

Slow transit, pelvic floor dysfunction, IBS-C

Secondary

Due to medications, lifestyle or medical disease

Acute

Sudden onset — needs evaluation for obstruction

Chronic

3+ months duration, requires long term management

 Diagnosis

Constipation is usually diagnosed based on clinical history and physical examination. In chronic or severe cases, additional tests such as blood investigations, colonoscopy, or imaging studies may be performed to identify underlying causes.

Evaluation includes:

• Medical history and dietary assessment

• Physical examination

• Digital rectal exam if needed

• Blood tests (thyroid, glucose, anemia)

• Imaging/colonoscopy if red-flag signs are present

• Transit studies or anorectal manometry in chronic cases

 Treatment & Management

Treatment focuses on lifestyle changes such as increasing dietary fiber intake, drinking adequate fluids, and engaging in regular physical activity. Mild cases may improve with these measures alone, while more persistent cases may require stool softeners, laxatives, or medical treatment under supervision.

1️. Dietary & Lifestyle Measures

• Increase water intake (2–3 liters/day unless restricted)

• Fiber-rich diet (25–35g/day)

• Oats, fruits (apple/pear with skin), leafy veggies, legumes

• Avoid processed foods & excess sugar

• Regular exercise (20–30 mins/day)

• Develop a routine: try bowel movement every morning

• Never ignore the urge

2️.Medications

1.Bulk-forming agents

Psyllium, methylcellulose

Improves stool volume & softness

2.Osmotic laxatives

Polyethylene glycol (PEG), lactulose

Draws water into bowel

3.Stimulant laxatives

Bisacodyl, senna

Short-term use only

4.Stool softeners

Docusate sodium

Useful after surgery or postpartum

5.Prokinetics

Prucalopride

Increases gut motility (doctor-guided)

Medication use should be guided by a healthcare professional based on age, severity, and cause.

3️⃣ Advanced Treatments

• Biofeedback therapy for pelvic floor dysfunction

• Botox injections for anal sphincter hypertonicity (rare cases)

• Surgery (very rare; only for obstructions or severe refractory cases)

 Diet Tips for Constipation

Recommended

Whole grains, bran cereals

Fresh fruits & vegetables

Warm water in early morning

Probiotic-rich foods (curd/yogurt)

 Home Remedies

• Warm water with lemon in the morning

• Prunes or prune juice

• Psyllium husk with a glass of water at night

• Squatting posture or footstool during toilet use to ease passage

 Complications if Untreated

Chronic untreated constipation can lead to complications such as hemorrhoids, anal fissures, rectal prolapse, and fecal impaction. Early management helps prevent these outcomes and improves quality of life.

• Hemorrhoids (piles)

• Anal fissures

• Fecal impaction

• Rectal prolapse (rare)

• Chronic abdominal pain & bloating

 When to Visit a Doctor

Seek medical help if:

• Symptoms last more than 3 weeks

• Medication side effects suspected

• Severe pain or bleeding occurs

• Alarm signs (blood loss, weight loss, anemia)

- medskology medical team 

Disclaimer:

The information provided on this website is for educational and informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified physician or other licensed healthcare provider with any questions you may have regarding a medical condition. Do not ignore or delay seeking medical advice because of information you read on this website. The use of any information provided here is solely at your own risk.