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Doctor insights on: Rashes On Back Of Knees

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Hi, I woke up with an itchy red rash on back of knee. Looks inflamed w/ brown dots & little scabs on the follicles. Used cortisone 3 days, not better?

Hi, I woke up with an itchy red rash on back of knee. Looks inflamed w/ brown dots & little scabs on the follicles. Used cortisone 3 days, not better?

See Specialist!: It could be a general contact dermatitis. If after 3 days of using an anti-inflammatory cream with no relief, I recommend getting it looked at in person. If you have any symptoms such as increased redness, swelling, fever or nausea, make sure you seek medical treatment immediately! Get better soon! ...Read more

Dr. John Chiu
2,663 Doctors shared insights

Rash (Definition)

A skin rash is a symptom in which a person has changes on part or all of his skin, such as color changes, bumps, blisters, oozing, peeling, ...Read more


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My 2 year old has a rash armpit, back of knee, down arm, back of neck with fever?

My 2 year old has a rash armpit, back of knee, down arm, back of neck with fever?

To vague for dx: There are far too many conditions or agents that could be linked to this set of symptoms. You may need to see a doc if the problem doesn't self heal over a day or two. ...Read more

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Have a petal like dry skin rash on back of knee, to front, also a round one below belly button, was told it was ringworm/lotrimin, nope, any ideas?

Have a petal like dry skin rash on back of knee, to front, also a round one below belly button, was told it was ringworm/lotrimin, nope, any ideas?

Eczema: What you are describing sounds like eczema or an allergic contact dermatitis to nickel. Sometimes the nickel found in the metal snaps on jeans will contact the skin and cause an allergic reaction where it contacts. The rash on the back of your knee is likely more along the lines of eczema. It is difficult to tell, so I would recommend you see a dermatologist to check it out. ...Read more

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Have itchy rashes on arms, back, knees and stomach for 7days and no fever. My platele is 180, and I am HBsAG reactive. Is it just a viral infection?

Have itchy rashes on arms, back, knees and stomach for 7days and no fever. My platele is 180, and I am HBsAG reactive. Is it just a viral infection?

Probable: But only time will tell. If they go away in about 2 weeks, then i'd not lose sleep over it. If not, then you may need to see your doctor or dermatologist. A drug reaction can cause a rash as well. ...Read more

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I have a red rash on my left back knee, what is that?

I have a red rash on my left back knee, what is that?

Be seen: It could be either eczema or perhaps a fungal infection, but you need to see your physician for an exam and diagnosis. ...Read more

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What is this rash on the back of my knee and inside of my elbow?

What is this rash on the back of my knee and inside of my elbow?

Eczema: This is typical of eczema and will respond to prescription cortisone. An exam might reveal something else. OTC hydrocortisone is usually not potent enough but no harm in trying. ...Read more

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What could have caused me to have a bruise and rash on the back of my knee?

What could have caused me to have a bruise and rash on the back of my knee?

See a dermatologist: It is difficult to make a proper diagnosis since I am not there to see the condition. I recommend seeing a dermatologist so that they can make a proper diagnosis and give you something to get rid of the condition or relieve symptoms. ...Read more

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Can I send pic of rash on back Shingles? Also recouping knee replacement. Cause get it again? '88had shingles same area. Sores in hair make neck. To do

Can I send pic of rash on back Shingles? Also recouping knee replacement. Cause get it again? '88had shingles same area. Sores in hair make neck. To do

Try HealthTap PRIME: HealthTap PRIME doctors see and treat you, via smartphone, tablet, or laptop. They can see photos you upload into your FILES. You can also send images while in the middle of a live PRIME consultation. PRIME can be accessed from anywhere in the world, and patients just have a monthly subscription fee. (Doctors answering HealthTap BASIC free questions are not able to see patients' images or photos.) ...Read more

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Off/on for past year+ I've been fighting an itchy rash on my butt (btwn chks). It comes/go. Recently I have had other symp-hair loss, rash on back of neck, behind knees. I have hypo thyroid. What cause?

Off/on for past year+ I've been fighting an itchy rash on my butt (btwn chks). It comes/go. Recently I have had other symp-hair loss, rash on back of neck, behind knees. I have hypo thyroid. What cause?

Skin: Hypothyroidis even uncorrected would unlikely to cause the skin lesions you described. I think at this time you need to have a work up to rule out other autoimmune diseases. Also, seeing a dermatologist would be helpful. ...Read more

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I have bad rash on the back of my knees, arms (behind elbows) and around neck. I've been using triamcinolone acetonide cream but rash returns always?

I have bad rash on the back of my knees, arms (behind elbows) and around neck. I've been using triamcinolone acetonide cream but rash returns always?

See a dermatologist: It's difficult to say without seeing your rash. Psoriasis is a possibility, as is eczema. But let a professional check it out. ...Read more

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Rash on back of thigh and behind knees. Sat too long?

Rash from sitting: Possibly. There are many causes of skin rashes in these areas, but sweating and friction is a common cause on the back of the upper legs. ...Read more

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What could cause itchy red rash under upper arm and back of knees?

What could cause itchy red rash under upper arm and back of knees?

Many possibilities: Possibilities are intertrigo, eczema, inverse psoriasis, contact dermatitis, candida (yeast). See a doctor or dermatologist for proper diagnosis and treatment. ...Read more

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Left leg really sure. X-rays show no break/chip. Now small red rash/bump on back of thigh above knee. Could this be shingles?

Left leg really sure. X-rays show no break/chip. Now small red rash/bump on back of thigh above knee. Could this be shingles?

Shingles?: Shingles is a reactivation of the chicken pox virus. Therefore, for it to be shingles, the rash must look like chicken pox. The rash starts out as vesicles, or small sized fluid blisters that eventually scab over. If this is what you see, it could be shingles and you should see a doctor right away to be placed on antiviral medication to stave off post herpetic neuralgia, a very painful condition. ...Read more

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My 4 yr old son suffers from itching, rashes and redness after every 7-10 days behind his knees & back of his thighs, hips and elbow joints?

My 4 yr old son suffers from itching, rashes and redness after every 7-10 days behind his knees & back of his thighs, hips and elbow joints?

Eczema: Eczema is a skin problem which causes dry, itchy skin, especially in the areas you mentioned. It can come and go for years. Bathe with plain water, only mild soap as needed, no scrubbing. Pat dry and apply a good moisturizer (no fragrance, thick, not a watery lotion) regularly. If it worsens and causes raw skin, see your doctor. ...Read more

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What to do if I have red dots on back of knee rash help?

What to do if I have red dots on back of knee rash help?

Assessment.: This can't be diagnosed with the information that is available. A history, physical examination & other studies may be needed to determine cause/causes. Once accurately assessed a treatment plan can be developed. ...Read more

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Itchy feeling at the back of both my knees no rash or cuts. Does feel dry but no dry skin viable? What could be causing it?

Itchy feeling at the back of both my knees no rash or cuts. Does feel dry but no dry skin viable? What could be causing it?

Eczema: Use a cream containing a ceramide such as Eucerin Eczema Relief or Aveeno (oatmeal) Eczema Care, especially after washing. Wash with skin cleanser made for dry skin such as Dove. Try hydrocortisone cream. If this does not do enough, your DR. Will give you a prescription steroid cream. No cure. So you will be doing maintainance off and on for a long time. ...Read more

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I have a red bumpy rash on my back it itchs awful. I so itch at the bend of my knee and both sides of my breasts and there is no rash...?

I have a red bumpy rash on my back it itchs awful. I so itch at the bend of my knee and both sides of my breasts and there is no rash...?

Rash or not?: You said that you have a bumpy rash on your back. If I read your question correctly, you are having itching on your knees and chest but no rash. This could be a sign of eczema, dry skin, contact dermatitis or even another medical illness altogether (like thyroid disease). I would suggest you see your doctor. In the meantime, a topical antihistamine cream or steroid cream may help. ...Read more

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For about 5 years, without a doubt, I get what seems to be a rash on the back of my left leg. Always below the back of my knee. Any ideas?

For about 5 years, without a doubt, I get what seems to be a rash on the back of my left leg. Always below the back of my knee. Any ideas?

Answer: Yes there is something in your system. Now you will have to give a description of the rash. Poison ivy for instance stays in the system for 5 years. So a good description is vital for diagnosis ...Read more

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I have a rash at the top of my butt crack. It first appeared on the back on my right knee when I was a teen, but is now gone.?

I have a rash at the top of my butt crack. It first appeared on the back on my right knee when I was a teen, but is now gone.?

It could be many: Things commonly eczema, fungus, psoriasis. I would see dermatologist for diagnosis and treatment. You can certainly try some hydrocortisone but if not better see doc. ...Read more

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I am a male age 67, and have an itching problem. No rash, and no major problem with this other than losing sleep. Usually starts at bed time and it can be anywhere on my body, knee, back chest, I mean anywhere.

I am a male age 67, and have an itching problem. No rash, and no major problem with this other than losing sleep. Usually starts at bed time and it can be anywhere on my body, knee, back chest, I mean anywhere.

Itching: Itching can be caused by almost anything such as dry skin, eczema, mites, or as a manifestation of an internal medical condition (such as thyroid, anemia, or rarely more serious disease). I would recommend you use Benadryl (diphenhydramine) one hour prior to going to bed and apply cerave cream twice daily. If your symptoms don't improve over the next couple of days, seek the guidance of a dermatologist who can evaluate you to determine what the cause may be so that proper treatment can be given. ...Read more

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I felt a sting on back of leg just above the knee. Now there is purple rash?

I felt a sting on back of leg just above the knee. Now there is purple rash?

Reaction...: If there was a sting or bite the usual response is a skin reaction. Monitor the area and if the symptoms increase, the rash spreads and/or gets painful you will need to go to the ED as that could be a potential allergy. Get better soon! ...Read more

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There is a small patch of blisters on the back of my leg where my knee bends. It is also has a huge red rash around it. My leg also hurts to bend.?

Get examined: For further evaluation of possible bacterial or viral infection. Cannot be diagnosed without direct visualization. ...Read more

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My Son (2 years) has rash on just above wrist, inner side elbow and back of knee. It not very aggressive but he is scratching it while he is in sleep?

My Son (2 years) has rash on just above wrist, inner side elbow and back of knee. It not very aggressive but he is scratching it while he is in sleep?

Rashes in children: It is very hard to diagnose rashes "over the phone" and your best bet is to have it looked at. Eczema is a common offender, as is contact dermatitis including poison ivy or other irritating substance. ...Read more

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I'm in need of a knee cartilage graft from a car wreck, but now the back of my knee is puffy and swollen and has a bit of rash. Is it related to injy?

I'm in need of a knee cartilage graft from a car wreck, but now the back of my knee is puffy and swollen and has a bit of rash. Is it related to injy?

MVA knee pain: Most likely this is related. With regard to the surgery I would suggest that you speak to someone who deals in regenerative procedures (Stem Cell) in the knee. This may be a good option before any surgery - this also depends on your pathology also. ...Read more

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I got a sweat rash behind my knee a year ago. It disappeared a long time ago but it's coming back again since the weather's getting warmer. Normal?

I got a sweat rash behind my knee a year ago. It disappeared a long time ago but it's coming back again since the weather's getting warmer. Normal?

Eczema behind knees: Most of the time eczema gets worse when it is cold outside due to dryness of air both inside and outside. However in some people eczema flares in the spring and summer when humidity goes up. In this case keeping the area cool and using a fragrance-free moisturizing cream may help relieve the symptoms and improve rash. If not, please see your dermatologist. ...Read more

Dr. Cornelia Franz
1,059 Doctors shared insights

Rash (Definition)

A rash is a change to skin condition which can affect color, appearance, or texture. It may or may not ...Read more