The blood blisters on the tongue break and grow white spots may be caused by trauma to the blood blisters, broken and complicated by Candida stomatitis, as follows. 1. Blood blisters on the tongue are mostly caused by trauma, such as friction or scratches on the sharp edges of stumps, crowns, and bad restorations in the mouth, bites during chewing, and trauma when consuming too hard food. 2. Candida stomatitis is an oral mucosal disease caused by Candida spp. infection, the damaged area of the mucosa is congested with scattered pinhead-sized white soft spots, which can develop and merge into white velvety patches. The blood blisters on the tongue broke long white spots may have other reasons, it is recommended to go to the hospital in time, clear cause for targeted treatment.