How did transparent blister grow below tongue to return a responsibility recently

Under the tongue long transparent blisters, may be the occurrence of sublingual gland cyst, in the sublingual gland duct injury, saliva drainage will lead to gland slowly expand the formation of transparent blisters, easy to repeat attacks. Secondly, there may be a tongue cyst, it is recommended to timely go to the hospital oral and maxillofacial surgery examination, find out the cause after giving symptomatic treatment.