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Doctor insights on: Burning Red Itchy Rash On Back Of Knees

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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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Dr. Jane van Dis
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Dr. Cornelia Franz
1,062 doctors shared insights

Rash (Definition)

Most bumps and blotches on a newborn baby are harmless and clear up by themselves. By far the most common skin problem in infants is diaper rash. Diaper rash is an irritation of the skin caused by dampness, urine, or feces. Most babies who wear diapers will have some type of diaper rash. However, there are other skin disorders that can cause rashes. These are usually not serious unless ...Read more


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I have a bright red (and itchy!) rash on the back of both my legs, between my butt and knee. It looks like small bug bite like bumps. Not spreading.?

I have a bright red (and itchy!) rash on the back of both my legs, between my butt and knee. It looks like small bug bite like bumps. Not spreading.?

Many causes: Rashes are challenging even when the doctor can see them, so even harder in this forum. Small red bumps on both legs make me think of reactions to clothes, or something in contact with that area on both sides. Bites can do it. It could be heat rash, a reaction of the skin to warmth and occlusion from pressure. Some drug reactions can do that as can conditions like eczema and psoriasis. ...Read more

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Dr. Jane van Dis
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Many bright red and itchy rash on the back of both my legs, between butt and knee. It looks like small bug bite like bumps smeared in a line. Nospread?

Many bright red and itchy rash on the back of both my legs, between butt and knee. It looks like small bug bite like bumps smeared in a line. Nospread?

Many causes: Rashes are challenging even when the doctor can see them, so even harder in this forum. Small red bumps on both legs make me think of reactions to clothes, or something in contact with that area on both sides. Bites can do it. It could be heat rash, a reaction of the skin to warmth and occlusion from pressure. Some drug reactions can do that as can conditions like eczema and psoriasis. ...Read more

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I have seen my Doctor several times over the last 2 years about this red, itchy rash with tiny fluid filled bumps on my knees.

I have seen my Doctor several times over the last 2 years about this red, itchy rash with tiny fluid filled bumps on my knees.

Itchy rash: Rashes are notoriously difficult to solve without seeing them. Hives are like raised patches and can be described as water-filled. Several treatment modalities would help you in that case. Contact allergy may be more likely and an Allergist can help identify triggers and treat that as well. Step 1 is to try not to rub/itch it, which makes the itch worse in either case. ...Read more

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After i drink several glasses of red wine, my right calf swells up, my leg aches, and i get an itchy rash behind my knee. Whats going on?

Reaction to sulfites: Is possible. Sometimes, more expensive red wines can contain sulfites. I don't know why your left calf will be spared though. Stick with cheap white wine. ...Read more

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Dr. Jane van Dis
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Itchy rash on back and chest --what is it \ why am I getting it?

Itchy rash on back and chest --what is it \ why am I getting it?

Many possible causes: Best to get evaluated to get accurate diagnosis but possibilities include folliculitis, grover's disease (wax/wanes often worse in hot weather), drug reaction. ...Read more

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Itchy rash on back of neck and in hairline also on lower back?

Itchy rash on back of neck and in hairline also on lower back?

Itchy back: You might be allergic to your shampoo or another hair care product. Without a medical exam it would be difficult to say. Consider using only a non sensitizing shampoo such as free and clear and avoid other treatments. If that doesn't work seek out a board certified allergist or dermatologist. ...Read more

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Had Catheter Ablation 1wk ago. Had 3days in the hospital & now have an itchy rash on back & now getting on stomach & chest. What can I do?

Had Catheter Ablation 1wk ago. Had 3days in the hospital & now have an itchy rash on back & now getting on stomach & chest. What can I do?

Be checked: It sounds like an allergic reaction to something, most likely something you came in contact with in the hospital. Have your doctor look at the rash and give treatment advice. ...Read more

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Dr. John Chiu
2,253 doctors shared insights

Skin Rash (Definition)

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


Dr. Doanh Nguyen
525 doctors shared insights

Itchy Rash (Definition)

Most itchy rashes are called eczema or dermatitis. Both are due to ...Read more


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