No. IBS does not cause it but if you strain too much then you might get your hemorrhoid worsened.
Can. Diarrhea or constipation can cause your hemorrhoids to flare up and since either may be a symptom of ibs, then yes. Hemorrhoids are normal veins, so ibs doesn't cause hemorrhoids but it can cause them to give you symptoms.
R/O IBS. Yes it can: IBS IS A DX OF EXCLUSION. INFECTION& IBD is inflammation usually can have fever. DX by BX IBS SX can be managed. You need a full exam and blood work. Especially screen for H pylori. Also stool screen x 3 for occult blood /parasite/ &colonoscopy./EGD While you are fo to a gluten free diet. Ie gutbliss. Com and Wholeapproach. Com TXPROBIOTICS/LEVSIN/BENTYL.
What to do if I have ibs-c and have developed an internal hemorrhoid. What is my best treatment option?
Many options. You need an exam from your primary care doctor or a general surgeon. Many internal hemorrhoids can be banded painlessly in the office setting. Sometimes simply sitz baths with epsom salts is effective. Rarely, surgical excision is required. Sometimes a colonoscopy may be recommended, if bleeding is present.
Constipation, rectal pain when sitting, spots of bright red blood on tissue, diarrhea, stomach cramps on right side. Ibs? Hemorrhoid?
Both or neither... Need diagnosis first. "cure" depends on if simply just hemorrhoids/fissure or something serious. Have you been straining at stool, have rectal dysfunction, perform an activity that increases pelvic engorgement with blood or increases pelvic pressure (heavy lifting, prolonged sitting, etc.)? History of colitis, infection, rectal/anal trauma or high risk? Best to get checked--don't delay please.
See MD. Ibs is not usually associated with blood in stool. If she has constipation alternating with diarrhea for an extended period of time she may fit the criteria for ibs diagnosis. Seek out a physician for the blood in the stool and a diagnosis of her symptoms.