Commute 45 to 59 min. 7.20%. Commute greater than 60 min.
1 Oral Ulcers: Usually, an ulcer is referred to as an open wound which is formed inside the mouth and this occurs due to the invasion of micro organisms. 2  Sometimes, blood blisters are caused due to the skin infections caused as a side effect of medications. 3  Ulcers are of two types they are: Canker sores and Cold sores.
Read More. Both Herpes type 1 and type 2 infection can cause blood blister on lip. Improper alignment of teeth causing friction of mucosa can also cause blood blisters on lips. If you are on birth control pills then rash/freckle/blood blister like things can also be a reaction to the pills.ip. 3 days ago, I woke up to an ulcer like big hump in my lip (raising my bottom lip a good quarter inch) and redness. over the next 3 days, it has cracked my lips and caused the top layer of skin to break. The skin break is right where the wet inside of your mouth meets the inside of your lips, right in the middle.