What’s wrong with standing up and wanting to poop and sitting down and not being able to poop?

Standing and want to poop sitting but can not pull out may be constipation, rectal diseases and hemorrhoids and other causes.
1. constipation: if you drink less water, eat too fine food, lack of exercise can lead to dry stools, constipation when the patient produces a strong desire to poop but it is difficult to discharge.
2. Rectal disease: it may be proctitis, rectal ulcer, rectal cancer that causes the feeling of heaviness. Rectal irritation is a kind of rectal irritation symptoms, due to inflammation stimulation of intestinal mucosa, resulting in defecation reflex, increased desire to defecate but can not pull out. The main manifestations are a feeling of falling in the anus, frequent bowel movements, a feeling of incomplete defecation, and even pain in the lower abdomen.
3. Hemorrhoids: hemorrhoids can cause defecation difficulties, internal hemorrhoids and other stimulation of the anal area to the feeling of wanting to defecate, in addition to the accumulation of feces in the rectum, stimulate the rectum triggered by the reflex to defecate, resulting in the intention to have a bowel movement when standing, but difficult to discharge when sitting.
If you have discomfort symptoms, you need to go to the hospital as soon as possible, the doctor according to the specific conditions, to develop individualized diagnosis and treatment plan, so as not to delay the condition.