Haing problems lips goblue when im walking sometimes only to go ok when rest a bit. School children and work mates and family keep telling me and when got in from work today and son said they gone blue and got me a mirror. I have already been under a cardiologist and had scan and ultra sound on my heart and were ok.My asthma consultant also said had seen the scan results and were ok..I see my consultant next week and left message for my hospital asthma nurse to phone me . My pf has been 250-300 as got a cold but up to 350-400 now.just dont know why go blue. Off to see my Gp tomorrow to see what he thinks before consultant next week. breathing not to bad and been A n E before with it and did ABG and was ok and was them who made apt for me see cardiologist and tests and were ok. Is this just a asthma thing or still need to push for answers. breathing not to bad and goes ok with in minutes resting .x UP DATE BELLOW!