ttt31 you wondered
Also, is it normal for the pain and severe itching to be worse at night?
Its quite normal but the reasons could be a host of a variety of things. Moisture, the food, clothing, perfumed soaps etc. Keeping the area clean and dry and perhaps washing it and thoroughly drying it before bedtime may help.
Heres a excellent place to go to try and pinpont your itching and ways to soooth it. Fot instance it says these foods are known to make anal itching worse
Chocolate
Citrus fruits
Coffee
Dairy Products
Nuts
Spicy food
Tomatoes
Unnecessary amounts of liquids
medicalnewstoday.com/articles/168728.php
And heres a thread here that relates to a person who had those same night itches...
analfissure.editboard.com/t3172-itching-like-crazyplease-help?highlight=itching
Manuka honey and coconut oil seem to help a lot of folk here with itching
hope this helps & good luck