I'd run it by your MD.

Also had an inflamed Sacraliliac joint but the pain was mostly lwr back.

A "Butt Doughnut" can be very helpful to take the pressure off the affected area.

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I also hate to admit this, but I have trigger points that are present that cause sitting difficult also. The reason I hate to admit is the cause is being in a sitting position in bed a lot that creates the trigger point. For me it is in my left Gluteus Maximus. It can cause pain in the tail bone and on the bony parts that we sit on. A good massage therapist that knows about trigger points could help.

I just bought The Trigger Point Therapy Workbook by Clair Davies. Very informative in identifying where the trigger points are and how they can cause referred pain. She also tells how to use a tennis ball to work on these areas. The idea is to get the point to release. It is done by pressure and stroking the area to increase blood flow. Anyway, it is definately worth the money for the book.

I never had a problem with my tailbone until being infected with Lyme. Last week we added a new antibiotic to my treatment plan and I have noticed an increase in the degree of pain, not to mention other areas of pain and increase of symptoms.

In addition to the condition that Aniek described, I also wonder if some of the pain is nerve related. I also have difficulty lying comfortably on my back because my legs tend to go numb and also the tailbone becomes more painful. Sometimes my husband and I can feel the heat radiating from these problem areas.

I did not experience this symptom in the first year of being sick. However it has been a problem during the last year. While on Rocephin the pain went away, but soon returned after being off Rocephin about one month and has been a problem for the last five months that I have been off Rocephin.

Mine started when we drove to Branson in a very small, uncomfortable car that we sold when we got back home! Had many treatments on it ... no luck in fixing the pain.

8+ years ago ended up going to physical therapy and she discovered my tail bone was OUT OF PLACE! So she went in & positioned it back where it was supposed to be. Helped tremendously for pain. If I sit too long, it acts up. Good luck.