What is the reason for the foreign body sensation in the anus? What causes it?

The causes of foreign body sensation in the anus are generally: downward displacement of the anal sphincter, habitual constipation, excessive force during defecation, internal hemorrhoids, etc. Therefore, in daily life, you should pay attention to your eating habits, keep your bowels open, and prevent the occurrence of diseases such as internal hemorrhoids.

1. What is the reason for the foreign body sensation in the anus?

1. Downward movement of the anal sphincter: The anal sphincter acts as a "plug" at the anus. During defecation, the formed fecal mass presses on the anal sphincter, and the smooth muscle in the subepithelial space of the anal canal and the combined longitudinal muscle fibers contract to lift the proximal end of the anal sphincter. When repeated chronic congestion causes the Parks ligament to stretch and thicken, the anal sphincter loses its support and prolapses downward. This also explains why the incidence of internal hemorrhoids increases with age;

2. Frequent constipation and holding the breath too hard during defecation can block venous return, causing congestion and hypertrophy of the anal cushions, which can cause internal hemorrhoids over time.

3. Due to various reasons, the resting pressure of the anal canal increases, and the increased pressure tension in the internal and external sphincters and the vascular space can cause an increase in resting tension, preventing the good return of blood, causing hypertrophy and swelling of the perianal veins, and causing internal hemorrhoids.

4. Other factors: such as arteriovenous shunt regulation disorders, hyperamylasemia, dyslipidemia, etc. will increase the incidence of internal hemorrhoids.

2. How to prevent foreign body sensation in the anus

1. Eating habits

Eat more foods high in fiber, such as fresh vegetables, fruits, and whole grains, to maintain normal bowel movements; reduce or avoid spicy and irritating foods to avoid causing hemorrhoids and affecting bowel movements. The elderly can drink a cup of warm water or light salt water on an empty stomach every morning. This can lubricate the intestines, stimulate peristalsis, and help relieve constipation in the elderly.

2. Anal lifting exercise

It is beneficial to do ani lifting exercises regularly. They help improve local blood circulation, improve the contraction function of the anal sphincter, maintain muscle elasticity, effectively prevent anal relaxation, and are also effective in preventing and treating hemorrhoids and prolapse.