0 View comments Two-and-a-half years ago my daughter developed a blood clot in her right leg, which then travelled to one of her lungs. She was only 37 and was put on the blood thinner warfarin. She’s since suffered from severe chest and leg pains. A recent scan revealed slight damage to one of her lungs, but everything else was in order. She’s also developed iritis four times. Blood tests revealed ‘elevated ESR levels’, but the doctor’s secretary had no idea what this was. Can you shed any light on these conditions? Mrs K. Palmer, by email. Iritis is a severe and painful inflammation of the coloured tissue in the eye (the iris) Your anxiety is understandable — there is uncertainty here, and you have a sense all is not well. Yet, so far, a diagnosis giving a rational explanation that ties together these events is lacking. Without that, there can be no treatment to prevent future ill-health. A deep vein thrombosis leading to a pulmonary embolism (blood clot