Hello dear Greetings Regarding your symptoms of difficulty with defecation which is enhanced by the the use of laxative I am suggesting that you have developed a chronic constipation Concerning the inflamed rectum this is in cognizance with a strong feaces that cause irritation In view of this please do the following test Barium enema Abdominal x-ray Serum PSA for enlarged prostate Serum electrolytes Meanwhile visit a gastroenterologist specialist with the result and for further expect clinical assessment and adequate drug prescription Moreover continue with your laxatives pending your appointment I hope this helps