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Doctor insights on: What Does A Blood Blister Look Like

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What does a blood blister in the mouth look like? Does it break open?

What does a blood blister in the mouth look like?  Does it break open?

Firm and purple: If you bite your lip/cheek and traumatize inside your mouth, but not enough to break open the suface of skin(mucosa) then you may develop a firm purple-colored bump. Over time the "blood-blister" will pop and drain and should heal quickly. If it does not resolve within 7-10 days, have it checked out. ...Read more

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Dr. Shontae Buffington
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Dr. David Hardin
211 doctors shared insights

Blood Blister (Definition)

A blood blister forms when skin and small blood vessels are damaged without breaking the skin. Trapped beneath the skin surface is some blood and skin fluid. Blood blisters are commonly caused by accidents in which the skin is pinched by a tool or a heavy weight, or they may occur from constant ...Read more


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I have what seems to look like a zip or a small blood blister on my right breast, i'm not sure what this is but should I be concerned about it? I

I have what seems to look like a zip or a small blood blister on my right breast, i'm not sure what this is but should I be concerned about it? I

See your doctor: Having these types of symptoms can best be solved by having your doctor perform a thorough evaluation. Only through this type of process can he/she discover what's going on and how best to help you. ...Read more

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Dr. Shontae Buffington
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I have a blood blister under my eyelid which seems to have "ruptured" and has spread, looking like a blackeye.?

I have a blood blister under my eyelid which seems to have "ruptured" and has spread, looking like a blackeye.?

Leave alone: Just don't blame me for the shiner! but the best approach is to just leave the area alone. Keep your head elevated by sleeping on extra pillows or put thick books under the head side of your mattress. Ice packs to the area on and off for 5 minutes every hour additionally helps. ...Read more

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I had what looked like a hard pimple on the bottom of my foot that I popped and now it wont stop bleeding. Is this a blood blister? what should I do?

I had what looked like a hard pimple on the bottom of my foot that I popped and now it wont stop bleeding. Is this a blood blister? what should I do?

Unlikely: you may have disrupted a blood vessel close to the skin or it's possible that you have infection or less likely malignancy. melanoma can occur on the sole of foot and be full of blood vessels so unless it looks like it's going away and no longer bleeding, see a dermatologist. ...Read more

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I have a large blood blister type lump on my bum it looked like a bruise a few weeks ago now its raised purple red in colour and soft to touch ?

I have a large blood blister type lump on my bum it looked like a bruise a few weeks ago now its raised purple red in colour and soft to touch ?

Healing bruise: What you described sounds like a healing bruise. It will heal but do not be concerned if there is some pigmentation in the area even after it is completely healed. The pigment is residual iron from the red blood cells. ...Read more

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Dr. Shontae Buffington
Board Certified
11 years in practice
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I have a small canker sore looking thing on the inside of my lower lip. Not painful. It looks more like a blood blister rather then a normally white s?

I have a small canker sore looking thing on the inside of my lower lip. Not painful. It looks more like a blood blister rather then a normally white s?

7 days vs a week: There is a joke in dental school, that with medication it takes a week to heal, and without, 7 days. However, there are some things that are helpful. If you frequently get these, try the supplement lysine daily. Avoid acidic foods and crunchy items that can irritate it, like potato chips. Rinse with warm salt water as a palliative measure. And there are OTC palliative salves. ...Read more

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I have what looks like a blood blister on the inside of my bicep , what should I do and will it go away and how long will it take?

I have what looks like a blood blister on the inside of my bicep , what should I do and will it go away and how long will it take?

Simple Answer: You need to identify why the blister developed and eliminate the problem. Then, the keys are to cover and protect the injured area with simple dressing changes every other day to allow healing. Remember that inflammation (red, hot, swollen and tender) are important parts of healing and do not necessarily mean infection. If this is healing, it cannot be infected. If it gets worse, see a doctor. ...Read more

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Dr. David Schleimer
1,451 doctors shared insights

Blistering (Definition)

Blistering is a bubble of skin filled with fluid. They can occur to excessive rubbing (as with a new pair of ...Read more


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Dr. Shontae Buffington
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