Bleeding hemorrhoids cause dizziness and weakness, breathing difficulties may be due to excessive bleeding, bloodsickness or nervousness. 1. excessive bleeding: hemorrhoids can lead to anal bleeding, if the bleeding is too frequent and the bleeding is too large, will make the patient anemia symptoms caused by dyspnea, dizziness, weakness and other symptoms. 2. bloodsickness: patients themselves have bloodsickness, hemorrhoids lead to bleeding, due to see the blood will appear dyspnea, dizziness, weakness and other symptoms of bloodsickness, if the situation is serious may cause coma. 3. mental tension: hemorrhoids after bleeding, sometimes will stimulate the patient, so that the patient appeared to mental tension, thus causing breathing difficulties, dizziness, body weakness and other symptoms. When bleeding hemorrhoids exist, you should go to the hospital for examination and treatment in time to avoid aggravation of the condition, leading to other lesions in the anus.