Hi & Welcome.
Incomplete data like age, gender, any associated symptoms like
constipation, dietary habits, drug intake, etc.
After having gone through the symptoms given in your query, I am of the opinion that the blood in the stool and irritation around the anus is not normal.
There are a number of causes responsible for the above symptoms like hemorrhoids (internal), fissure in the
anal canal, rectal polyps, even some time cancers.
I advise you to get clinically examined by a surgeon (digital examination of the
rectum or anoscopy) to detect the exact cause and get treated.
Meanwhile try to avoid constipation, avoid taking hot and spicy foods, take plenty of oral fluids, vegetables and fruits, do regular exercise.
Hope to have answered your query.
A feed back is appreciated.