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.
Quick Answer. Bleeding of the lips typically occurs when the lips are overly dry and become cracked due to excess sun exposure, cold weather or habitual lip-licking, according to Healthline. Nutritional deficiencies can also cause dry lips. Continue Reading.