what does a blood blister look like

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Dr. John Ebner answered:

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

Firm and purple

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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.
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Dr. Mark B. Taylor answered:

Rash from sun that is itchy some bumps look like blood blisters

Light Eruption-PMLE?

Go see a dermatologist for an accurate diagnosis and treatment.
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Rash that's itchy after being in sun bumps r itchy some look like blood blisters?

Sunburn or reaction

Autoimmune_conditions
Photosensitivity and photoreactions can occurs following sun exposure, particularly on certain medications (antibiotics being common). Sunburn can look this way as well. If you are sensitive to the sun in this way, be cautious and use SPF. Look at any medications you are taking to see if they predispose you so sun sensitivity. Some autoimmune conditions can have rash after sun exposure too.
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Dr. Otto J. Placik answered:

I have pimples that form on my vagina lips and get really big and look like blood blisters. They pop and bleed. What is this?

Hemangioma? Veins?

Blistering
Have you discussed this with your gynecologist or internist. Is this following sex , pregnancy, or inactivity. There are several questions that need to be asked. This sounds suggestive of a vascular lesion associated with varicose veins but could be other infections or tumors or reaction. Meet with your gynecologist.
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Dr. Boris Aronzon answered:

After tanning in tan bed for 5 min second time I have flat little red dots that look like blood blisters.like if u were to scratch yourself a lot?

Burn

Toe_pain
Skin reaction. Stop tanning and see dermatologist.
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I have what look like small blood blisters on my scrotum. They have been there for years. I am 44. No pain or discomfort. They never grow in size.

Angiokeratomas

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Angiokeratomas of Fordyce appear as deep blue small bumps on the scrotal skin. They bleed easily as they are dilated blood vessels. They are harmless and usually do not require treatment. They can be frozen, burned or lasered off if need be. If they are not like the picture here, it would be best to see a dermatologist for further evaluation.
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Can a blood blister look like cancer?

Melanoma

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We worry about melanoma, a skin lesion should be checked out
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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

See your doctor

Stringio
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.
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Dr. Lisa Kates answered:

I get like blood blisters underneath my breats. How can I prevent them? Or make the marks go away from previous ones?

Cherry Angiomas

Blood
The lesions you are describing sound like cherry angiomas and hemangiomas. These are benign, inherited lesions. Unfortunately, there is nothing that you can do to prevent them. There are howver several treatments for these. The best cosmetic reults are with laser treatments.
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