Sometimes blisters appear after a burn, after wearing new shoes for the first time or after maneuvering an object with great force. These blisters have a bubble shape and work as safeguards when the body detects damage to the skin.
Known in medicine as vesicles, blisters allow the skin to recover from any damage made to it. According to the medical website, webconsultas, conditions such as dermatitis and skins infections such as chicken pox or allergic reactions are some of the causes for why they appear.
Before they fully develop, the symptoms that appear include: pain around the area where the blister is forming, reddening of the skin and softened and raised skin. Once they are fully formed they are painful to touch, and are more or less sensitive depending on their location on the body.
In the majority of cases, they cure themselves and disappear on their own. It is very important, however, that the person affected by it keep the area clean and disinfected. If the blister persists and is more than three centimeters long, it is recommended that the person go visit the doctor for treatment.
The fluid inside the blister is called serum or plasma, and while it is generally clear, it may also be red if it is a blood blister, or green or yellow if it is filled with pus, indicating infection.