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Doctor insights on: Bruise Behind Knee

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I have dvt, pe 2 yrs ago, take blood thinners & wear compression stocking. Have bad low back pain last 24 hrs & large bruise behind knee. Advise pls.

I have dvt, pe 2 yrs ago, take blood thinners & wear compression stocking. Have bad low back pain last 24 hrs & large bruise behind knee. Advise pls.

Need exam: Sounds like you need a physical examination and blood work to recheck your inr level in your blood. You probably have a hematoma (blood collection) behind your knee. Sometimes these need to be drained. An exam is important to make sure you are not having neurological changes related to the back pain that might also mandate intervention. Don't delay! ...Read more

Bruise Or Contusion (Definition)

Bruises, or ecchymoses, are discolorations and tenderness of the skin or mucous membranes due to the leakage of blood from an injured blood vessel into the surrounding tissues. A serious disease called pupura presents as a cluster of small bruises called petachia. Petachia often appears as many tiny red dots clustered together, and could indicate a problem. ...Read more


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Bruise behind right knee and no injury to it. I don't know how I got it? It's brownish bruise

Bruise behind right knee and no injury to it. I don't know how I got it? It's brownish bruise

Watch and wait: You may watch and wait for it to heal. If it gets bigger, bleeds, or becomes painful, please see a doctor. ...Read more

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My mother in law has a bruise behind her knee. She says it is sensitive. What can it be?

My mother in law has a bruise behind her knee. She says it is sensitive. What can it be?

Most likely varicose: Superficial in type when they get inflamed they are sensitive to touch, check with your doctor, advil (ibuprofen) and moist heat usually help. ...Read more

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I discovered a very deep and dark purple bruise behind my knee 2 days ago...It is swollen a bit and very sore. I do not remember hitting or banging it?

I discovered a very deep and dark purple bruise behind my knee 2 days ago...It is swollen a bit and very sore. I do not remember hitting or banging it?

Post knee bruise: Not unusual to have spontaneous rupture of a posterior knee cyst, without a history of trauma. Expect bruising and discomfort to resolve gradually. Avoid activities and positions that produce increased discomfort. Use ice, alleve for 7- 10 days ...Read more

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I am 45 years old with a nickel size bruise behind my knee...it is painful to touch. Area is tender but not red and slightly swollen. 6 flights recent?

I am 45 years old with a nickel size bruise behind my knee...it is painful to touch. Area is tender but not red and slightly swollen. 6 flights recent?

Please get examined.: The examination should include a careful physical examination, ultrasound, & lab tests. This should be dealt with with all haste. Please let me know the results of your evaluation. ...Read more

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My mother had bone marow biopsy done on Friday. Today I noticed a large bruise behind her knee. Is this alarming?

My mother had bone marow biopsy done on Friday. Today I noticed a large bruise behind her knee. Is this alarming?

It is due to bleedin: It is not uncommon to have a small bruise after the bone marrow test which is often done with a large bore needle. Usually it stops with immediate pressure applied after the procedure. But if it has showed up in your leg, that indicates more extensive bleeding. So you must inform your doctor who did the procedure. Make sure that your Platelet count is Ok and your Hemoglobin (Hb) has not dropped ...Read more

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I just noticed weird brownish bruise behind my right knee. I didn't hit it against anything so concerned how I got it?

I just noticed weird brownish bruise behind my right knee. I didn't hit it against anything so concerned how I got it?

Ruptured Vessel: If it doesn't hurt I would just watch it. Could be a broken blood vessel from anything. If it starts to hurt or get bigger get it checked. ...Read more

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I have a deep bruise behind my left knee dors not go away and does not hurt, now im noticing the same above my elbows with a rash.

I have a deep bruise behind my left knee dors not go away and does not hurt, now im noticing the same above my elbows with a rash.

Bruising: If this bruising is happening spontaneously without any injury or trauma please see your doctor as soon as you can to be examined. This could be a sign of a more serious issue. ...Read more

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Pain on and off in left calf and knee and behind knee. Bruise next to shin and little swelling. Could pain b from that? Scared of it being a bloodclot

Pain on and off in left calf and knee and behind knee. Bruise next to shin and little swelling. Could pain b from that? Scared of it being a bloodclot

Pain in knee/calf: Did you have an injury? Could be from brusie, sprain if exercising or bakers cyst but would follow up today with doctor/urgent care make sure you do not have a clot in your calf (especially if you smoke or are on BCP) as that is serious. Check d-dimer or get a sonongram. ...Read more

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I have had a dry cough for over a month now and metallic taste in my mouth after coughing. & a bruise came up behind my knee overnight.?

I have had a dry cough for over a month now and metallic taste in my mouth after coughing. & a bruise came up behind my knee overnight.?

Medical care: I don't know what risk factors you might have for an underlying cause, but, regardless, a cough that lasts a month or more requires evaluation. The metallic taste might be an associated symptom, especially if you have infection in your sinuses or bronchial passages. As to the bruise behind your knee, only further evaluation will reveal what's causing it. ...Read more

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What causes burst veins and bruising behind your knees?

What causes burst veins and bruising behind your knees?

Age Pressure Reflux: Varicose veins of the lower extremities can have various sources. The varicose veins are a result of pooling of blood with increased venous blood pressure. The best way to close the varicose veins can be determined on physical exam and a focus venous ultrasound examination by a physician skill in treating venous disease. Check out the american venous forum or american college of phlebology. ...Read more

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I have a rash next to my knee in a square shape that's been there for months. It's even has a little bruise behind it. Any ideas what it is?

I have a rash next to my knee in a square shape that's been there for months. It's even has a little bruise behind it. Any ideas what it is?

Square Dermatitis: This is not a biologic shape. Consider contact dermatitis - something that has been applied to or pressed against the skin. If this does not answer your question, see your dermatologist. ...Read more

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I have what looks like bruising/discoloration behind my knee, but it's painless. It's a brown color, not purple/blue. What could be the cause?

I have what looks like bruising/discoloration behind my knee, but it's painless. It's a brown color, not purple/blue. What could be the cause?

Ecchymosis: This pigment could be due to breakdown products of red blood cells which stain the skin brownish yellow. Perhaps a tiny capillary or vein ruptured spontaneously and painlessly in the area. This pigment usually fades away gradually over a few weeks. Your physician can advise you further if necessary. ...Read more

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I have been at the beach for 4 days. Been doing a lot of walking. Noticed slight bruising behind both knees. Should I be concerned. No pain?

I have been at the beach for 4 days. Been doing a lot of walking. Noticed slight bruising behind both knees. Should I be concerned. No pain?

Bruising.: Your question is greatly appreciated. It is often difficult to provide a comprehensive answer without more details. Some of the more worrisome symptoms would include easy bruising, easy bleeding, skin rash, fever, fatigue, weakness or numbness in the extremities among others. If the condition persists or causes you concern it is best to be evaluated by a doctor. ...Read more

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My son has a bruising behind one knee and in the crease of his forarm. Irregular in shape? We have eczema in my family.

My son has a bruising behind one knee and in the crease of his forarm. Irregular in shape? We have eczema in my family.

Bruises: If you know that these bruises are caused by trauma like vigorous rubbing, then there should be no concern. If there has been no known injury and bruises (ecchymoses) appear elsewhere, a blood or clotting abnormality may be present and a physician should be consulted. ...Read more

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Hi just yesterday feel like behind my knee was bruised but no bruise there and bot fallen or banged it...I have started running light jogging could it be this....

Hi just yesterday feel like behind my knee was bruised but no bruise there and bot fallen or banged it...I have started running light jogging could it be this....

Question truncated: Your full question was truncated. Could be a bakers cyst or sprain or other knee problem. Resubmit your question or follow up with your GP to get checked out. ...Read more

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What could cause bruising behind my knee 5 days after straining my mcl?

What could cause bruising behind my knee 5 days after straining my mcl?

Bleeding: When you sprain the mcl, you tear the ligament. This caused bleeding in the location of the tear. You probably elevated the knee, so the blood travelled behind your knee and collected where you see bruising. That is completely normal. It may even become sore in the bruised area because of an inflammatory response. ...Read more

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Had Sclerotherapy on Tues- behind both knees. Rt. leg is very bruised and I feel pain/pinch a few inches under 1 bruise on inside calf. Ok or concern?

Post treatment: It is normal to have some pain/swelling/bruising after sclerotherapy, but you should speak with the doctor who gave you the treatment to evaluate how much pain/bruising you have. ...Read more

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How long should bruising last after having a blood test taken and why have I developed bruising all around my elbow on the same arm and behind the knee of the same side of the body?

How long should bruising last after having a blood test taken and why have I developed bruising all around my elbow on the same arm and behind the knee of the same side of the body?

See primary M.D.: Bruising at puncture sight from needle is very common and clears out in about a week. However having bleeding around elbow and knee is bothersome, You should go and see your primary doctor. After checking you out, he may need to do some more blood tests to rule out any bleeding disorder. ...Read more

Dr. Melissa Gowans
2,095 Doctors shared insights

Bruising (Definition)

Bruising = a contusion with ...Read more