what causes hemorrhoids to act up
Furthermore, the relaxation of the pelvic floor muscle aggravates hemorrhoids. When the sliding anal lining theory is considered as the pathogenesis of hemorrhoids, the causative factors can be easily surmised, and this can be helpful in the prevention of hemorrhoids. What causes hemorrhoids to act up: 1  Defecation with Prolonged Straining. Everyoneâs anal cushion descends on defecation. 2  Constipation with a Low-Fiber Diet. With illness or a low-fiber diet, hemorrhoids will develop as a result of prolonged straining. 3  Diarrhea.