Please choose the correct ending to complete the given sentence: Health: [header] How to care for hemorrhoids postpartum [title] Learn how hemorrhoids develop. [step] Hemorrhoids are caused by an increased pressure on the veins in the anus or rectum. The pressure can make a weaker portion of the vein weaker, which causes it to balloon a little, either inside the rectum or outside the body near the anus.

Ending1: You can properly care for hemorrhoids using helpful medical techniques that help relieve the pressure. [substeps] Look for enlarged veins or bleeding vessels. Ending2: Hemorrhoids develop because of a lack of blood flow to the veins. This pressure causes a decreased blood flow to each vein. Ending3: It may occur anywhere in the rectum, which is where the fluid also collects. [substeps] Most hemorrhoids are treated by surgical surgery to remove the sac, a thick, clear fluid that collects and wraps around the skin. Ending4: It is common for pregnant women to develop hemorrhoids because of the extra weight and pressure from the baby. [substeps] Pregnancy also increases the risk of constipation, which is another risk factor of hemorrhoids.

Answer format: ending1/ending2/ending3/ending4