A blood blister is caused by broken blood vessels under the skin, but the surface of the skin remains unbroken. It can be painful and should be protected from bursting and further wear and tear. Soldiers often thread a piece of string through the blister to drain it.
A blood blister is a specific blister that forms when blood vessels under the skin break, but the surface of the skin isn’t actually broken. As a result, the body basically bleeds under the skin, and the blood builds up under the skin, along with lymph and other fluids. A blood blister usually has a very dark red color, sometimes close to black. If the wound heals, but blood remains trapped, it may dry out and eventually take on a slightly harder texture.
Depending on the injury, even a blood blister can be a source of some pain. This is because there is often some level of bruising during the trauma that has broken blood vessels and the bladder is always keeping pressure on the bruise. In these cases, even touching it lightly can cause severe pain, and many people burst the blisters to relieve the pressure and pain.
The most common cause of a blood blister is trauma in which the skin is pinched by something, often something like a pair of scissors or pliers, or a door hinge or some other object. The blood vessels are then broken, but in the absence of a traction or stab wound, the skin itself is not broken. This allows blood to pool and form a blister. In some cases, a blood blister can form from some sort of constant wear and tear, such as a pair of shoes that don’t fit properly on a long hike. They can also be formed due to frostbite, in which blood vessels under the skin burst from the expansion of the fluid in them, but the skin never ruptures.
Ideally, a blood blister should be treated by protecting it from bursting and protecting it from further wear and tear. Initially, a cold compress may be used to relieve pain and to prevent the body from reacting as strongly with an immune response. Afterwards, Epsom salts can be used to reduce swelling. If possible, the whole area should be elevated, to help blood drain from the bladder, and should be bandaged, changed and cleaned regularly.
A blood blister shouldn’t actually have burst, but in some cases this may be unavoidable. Blisters obtained from excessive walking, for example, can burst if you have to keep walking on them. In this case, it is important to clean the wound thoroughly and disinfect it, then bandage it well and cleanly, and continue cleaning and re-bandaging as it heals. A blood blister can be an easy source of infection, especially since most occur on the hands or feet.
For those engaged in an activity that may cause them to blister, such as soldiers on a long march, putting extra padding or blisters on blister-prone areas is an excellent idea. If blisters form, and need to be treated while still traumatizing the wound, a technique often used by soldiers is to thread a piece of string through the blister, so it can slowly drain and the layers of skin can form a seal. and paste. While not recommended, in some cases this may be the only option available, and if it is undertaken, great care should be taken to ensure that an infection does not develop.
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