A reliable diagnosis for Lupus on its way?February 3, 2011 at 9:41 am | Posted in arthrits, rheumatoid arthritis, fibromyalgia, joint pai, Me, rheumatoid arthritis (RA) | 2 Comments
Tags: arthritis, butterfly rash, diagnosis, lupus, R.A., RA, rhematoid arthritis, rheumatoid, Rheumatoid arthritis, rheumatoid arthritis (RA), rheumatology, ystemic lupus erythematosus
You may think RA is a hard one to diagnose, and I’ve often heard complaints as to how it’s overlooked by medics and the public alike, but Lupus (or Systemic lupus erythematosus to give it its full name) is RA’s poor relation in this respect. Lupus is another autoimmune disease, but this time with the autoimmune system attacking connective tissue – and of course connective tissue occurs in all the internal organs as well as joints, so it can cause inflammation of all sorts of parts of the body, resulting in a bizarre set of symptoms that is often not diagnosed as one problem i.e. Lupus, for many years. I suspect that one reason is that GPs etc. would only recognise it from the famous ‘lupus butterfly rash’ that occurs on the cheeks and across the nose, but according to Wikipedia (and I don’t know where they referenced it form!) only 30-50% of Lupus sufferers ever display the rash at all. Some research has been done now in America to show that Lupus might be caused by a malfunctioning of ‘micro RNAs’, which are things that white blood cells use to control the function of antibodies etc. This is research in mice, something that a lot of people would find uncomfortable but which I’m not going to get into a discussion about here; from a purely biological point of view, however, diseases in mice show a remarkably good correlation to diseases in humans, and the mice show a consistent pattern of ‘dis-regulated’ micro RNAs when they develop Lupus.
What that means is that, probably ten years or so down the line, if it gets that far*, there could be a simple diagnosis ‘kit’ for Lupus, where it can be clearly and easily diagnosed with a blood test or similar, whereas at the moment there is no such test – various tests can hint that it might be Lupus or some other autoimmune disorder, but then again it might not, but there’s nothing conclusive.
Like rheumatoid arthritis 1) it’s quite likely that there are a lot of people out there who are in the early stages and undiagnosed and 2) with Lupus it’s known that many people are either undiagnosed or misdiagnosed for many years before they are given a diagnosis of Lupus, so a test that is as conclusive as this sounds like it would be would certainly be very good news indeed.
We then have to hope of course that the test itself is not so expensive that no clinicians will actually pay to use it, but that’s another story, and probably one we won’t have to worry about for another ten years or so!