By Robyn Bell & Benedict Tetzlaff-Deas A mum who was made to feel like a ‘hypochondriac’ after developing different symptoms has spoken out about her struggles to get diagnosed. Sarah Heney, 60, from Edinburgh, later found out she had lupus \- an ‘invisible condition’ that forced her to retire from her beloved job in her 40s. She is sharing her story to mark World Lupus Day on Friday, May 10. Lupus, a non-curable long-term condition, can cause sufferers to experience joint pain, skin rashes and fatigue. In severe cases, it can lead to life-threatening complications. She told Edinburgh Live: “I…