What causes stomach pain and bleeding from the anus

Definition

Haemorrhoids are swollen or inflamed veins in the lower rectum or around the anus. They are a common cause of minor rectal bleeding and discomfort. Haemorrhoids may be internal, inside the rectum, or external, around the anal opening, and while generally not dangerous, they can cause significant irritation.

Causes

Factors contributing to haemorrhoids include chronic constipation, straining during bowel movements, pregnancy, prolonged sitting, heavy lifting, or age-related weakening of blood vessels. A low-fibre diet and dehydration can increase the risk. Some people may also be more prone due to family history.

Symptoms

Typical symptoms of haemorrhoids include bright red blood on toilet paper, streaks in the stool, itching, and discomfort when sitting. Some patients may notice a lump near the anus that can be tender or painful. Haemorrhoid flare-ups can be intermittent, often triggered by bowel strain or prolonged sitting.

Management

Mild haemorrhoids often improve with increased fibre intake, hydration, and regular physical activity. Topical creams and warm sitz baths can relieve pain and itching. In severe or persistent cases, procedures such as rubber band ligation or minimally invasive surgery may be recommended by a specialist.

Definition

Anal fissures are small tears in the lining of the anus that occur when tissue is stretched or damaged. They can result from passing hard stools, chronic diarrhoea, or injury during bowel movements. Fissures can be acute or chronic, with chronic fissures sometimes requiring additional medical intervention.

Causes

Fissures are typically caused by constipation, passing hard stools, repeated diarrhoea, or trauma to the anal canal. Certain inflammatory conditions or infections can also increase susceptibility. People who are dehydrated or have a low-fibre diet are at higher risk, as their stools tend to be harder
to pass.

Symptoms

Patients with anal fissures often experience sharp, stinging pain during and shortly after bowel movements. Minor bleeding is common, usually bright red, and itching or irritation around the anal opening may be present. Visible tears may sometimes be observed in chronic cases. They usually heal with time.

Treatment

Treatment focuses on reducing strain and promoting healing. Treatments may include dietary changes to soften stools, stool softeners, warm sitz baths, and prescribed topical creams. Chronic fissures may require specialist evaluation or minor surgical procedures. Early care can prevent recurrent episodes.

Definition

Gastrointestinal infections are caused by bacteria, viruses, or parasites affecting the stomach and intestines. They can lead to inflammation, abdominal discomfort, diarrhoea, nausea, and occasionally rectal bleeding. Infections may be acute but can be severe, particularly in vulnerable individuals.

Causes

Infections often occur due to contaminated food or water, poor hygiene, travel-related exposure, or contact with infected individuals. Some pathogens spread easily in households or community settings, leading to outbreaks. Children, older adults, and those with weak immune systems are
most at risk.

Symptoms

Symptoms commonly include abdominal cramping, watery diarrhoea, blood in stools in some cases, nausea, vomiting, fever, and fatigue. Dehydration may occur if fluids are not replaced, which is especially dangerous for children and older adults. Most people recover with proper hydration and care within days.

Treatment

Treatment focuses on hydration and replacing lost electrolytes. Antibiotics or antiparasitic medications may be necessary depending on the cause. Supportive care and rest help the digestive system recover, and early treatment reduces the risk of complications. Most people recover within a few days.

Definition

Inflammatory bowel disease (IBD) includes Crohn’s disease and ulcerative colitis, chronic conditions causing persistent inflammation of the digestive tract. IBD can affect nutrient absorption and lead to long-term complications if not managed
 properly.

Diagnosis

Diagnosis typically involves blood tests, colonoscopy, imaging scans, and stool analysis. This helps assess inflammation and disease extent and differentiates IBD from other digestive conditions. A precise diagnosis is essential to plan effective treatment.

Symptoms

Patients may experience stomach pain, diarrhoea, blood in stools, fatigue, unintended weight loss, and malnutrition. Flare-ups can be unpredictable, alternating with periods of remission. Early diagnosis and immediate treatment can help manage symptoms.

Management

Treatment for this condition may include anti-inflammatory or immunosuppressing medications, dietary adjustments to reduce irritation, and surgery for complications. Regular monitoring ensures effective symptom management and long-term digestive health. 

Definition

Colorectal cancer involves malignant growths in the colon or rectum. It may develop from polyps over several years and can be life-threatening if detected late. Regular screening can help detect it early and improve
 survival rates.

Risk factors

Age over 50, family history, genetic conditions, low-fibre diet, high red meat intake, smoking, and frequent alcohol use increase risk. Gradual lifestyle modifications and regular screening reduce risk and aid early detection.

Symptoms

Common signs include persistent stomach pain, blood in stools, changes in bowel habits, unexplained weight loss, and fatigue. Early-stage colorectal cancer may produce few or various noticeable symptoms, making screening important.

Diagnosis and treatment

Diagnosis is confirmed with colonoscopy and imaging. Treatment is personalised and may involve surgery, chemotherapy, radiotherapy, or targeted therapies. Early detection improves survival and outcomes. Follow-up care is essential.