### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
I ve had different kinds of shunts since birth. I ve 18 brain surgeries dealing with this since birth. The last 16 of them since 2005, as well as migraines. I ve had every kind of problem with the shunt since 2005 that shows a problem. Except now. My last surgery was done last year. I ve had fevers as high as 100.5 with nausea, pain where the shunts located. Now there s something new. There are red marks around the shunt on the abdomen. Plus a burning sesation though out most of it. My mom(who s an RN) has never heard of this. I m have testing done tomorrow morning. I see the doctor again in 2 days. Do you have any idea why the burning sensation has been here for the past 4 days, & what could be done? Thank You For Your Opinion!

### output:

Hi, The sensation of burning on the skin is usually attributed to the irritation of some nerve or nerves in the area.  The redness is usually taken to be a sign of some type of inflammation under the skin or subcutaneous tissues, often times as the result of an infection or other forms of irritation from a foreign body or toxic substance.  The first thing I believe needs to be ruled out is an infection in the abdominal area where the shunt is placed.  The 2nd thing is to be sure that the shunt is not broken or otherwise not working the way it should for some reason. So that I can see the surface anatomy you are referring that appears red please send a digital photograph. Don't use a flash device for lighting. Just regular ambient lighting is fine. I would think that an ultrasound would be one of the best and least invasive imaging studies to obtain in order to see what might be in the area of the shunt to explain the redness and burning sensations. Hope I have answered your query. Let me know if I can assist you further. 