Hemorrhoids: This condition is very common and can cause the passage of mucus and streaks of blood with stools due to the irritation and inflammation of the hemorrhoidal veins.

Anal Fissure: A tear in the lining of the anus can cause pain and bleeding, and sometimes mucus, during bowel movements.
Inflammatory Bowel Disease (IBD): Conditions like ulcerative colitis and Crohn's disease can cause inflammation in the digestive tract, leading to symptoms including mucus and blood in the stool.
Infectious Colitis: Infections in the colon can cause inflammation, leading to symptoms such as mucus and blood in the stool, along with diarrhea and abdominal pain.

Colorectal Cancer: Although less common, especially in younger individuals, colorectal cancer can present with mucus and blood in the stool. It's crucial to rule out this potentially life-threatening condition.
Intussusception: A condition where a part of the intestine slides into an adjacent part, which can cause bowel obstruction and ischemia, presenting with bloody stools and mucus.
Meckel's Diverticulum: A congenital anomaly of the small intestine that can cause bleeding, which may be seen as blood and mucus in the stool.

Lymphogranuloma Venereum (LGV): A sexually transmitted infection that can cause proctitis, leading to symptoms including mucus and blood in the stool.
Diverticulitis: Inflammation of the diverticula in the colon, which can cause changes in bowel habits, including the passage of mucus and blood.
Gastrointestinal Lymphoma: A type of cancer that affects the immune cells of the digestive tract, which can cause a variety of symptoms including mucus and blood in the stool.