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I have a rash that started after a cat scan with contrast.

Customer Question
I have a rash...

I have a rash that started after a cat scan with contrast. The rash looks like goose bumps. It's extremely itchy, all over but particularly bad on my legs arms the last two days. I've seen my dr. Steroids and antihistamines did not work. The rash is moving from spot to spot. I then saw a dermatologist who prescribed stronger antihistamine and topical steroid ointment. Still no improvement. I'm concerned as it's hard to sleep and even wearing clothes irritates it greatly. As does showering. I've never had anything like it before. I had prickly heat rash once, twenty years ago in ThailanNd

Doctor's Assistant: What seems to make the symptoms worse or better? Have you noticed any swelling?

The symotoms seem to cycle -- I manage to sleep after putting cream on my limbs to cool things down but the ithching wakes me up. No particular swelling, just bumps where I've scratched

Doctor's Assistant: Anything else in your medical history you think the doctor should know?

Such as?

Submitted: 8 months ago.Category: Dermatology
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Answered in 5 minutes by:
9/16/2017
Dermatologist: Dr. Chip, General pratice replied 8 months ago
Dr. Chip
Dr. Chip, General pratice
Category: Dermatology
Satisfied Customers: 36,688
Experience: Years of outpatient experience treating dermatological problems
Verified

Hello I'm Dr Chip

Could you please post a photo on this page for me?

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Customer reply replied 8 months ago
This was a few days ago
Customer reply replied 8 months ago
Another of my leg
Customer reply replied 8 months ago
Leg
Customer reply replied 8 months ago
Chest
Customer reply replied 8 months ago
The goose bumps stay constantly and my body feels cold flushes with it. It's like my pores don't know their job right now.
Customer reply replied 8 months ago
Hi are you there dr
Dermatologist: Dr. Chip, General pratice replied 8 months ago

Here--give me a moment

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Customer reply replied 8 months ago
Ok
Dermatologist: Dr. Chip, General pratice replied 8 months ago

OK

This is tinea versicolor-- a fungal skin infection

You can use over the counter clotrimazole cream twice a day for two weeks to clear it up

But if that doesn't work you'll need either prescription ketoconazole cream or oral Diflucan

Please let me know if you need any more information

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Customer reply replied 8 months ago
What is it causes by?
Dermatologist: Dr. Chip, General pratice replied 8 months ago

It's fungal--a little akin to athlete's foot

But in your case it was probably instigated by the contrast

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Customer reply replied 8 months ago
Are these kinds of rashes common after ct with contrast?
Dermatologist: Dr. Chip, General pratice replied 8 months ago

No, not common but it's a little like an allergic reaction to the contrast

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Customer reply replied 8 months ago
Hi again, Dr. I'm not convinced as it looks nothing like tinea. And, how would this be related to ct contrast?
Dermatologist: Dr. Chip, General pratice replied 8 months ago

As i said it can be triggered as an allergic reaction to the contrast

But not tinea corporis--ringworm--a different kind of tinea

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Dr. Chip
Dr. Chip
Dr. Chip, General pratice
Category: Dermatology
Satisfied Customers: 36,688
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Experience: Years of outpatient experience treating dermatological problems

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