My 4 year old grandson has red marks along his spine. Looks like someone made marks along the spinal column. Started with 1 small area on the lower part of his spine on Saturday. There are now 11 red dash-like marks going up his spine. He started to complain of pain today but he is walking and moving about. He is afebrile. He does have a diagnosis of Leighs disease, pyruvate dehydrogenase deficiency. My daughter in law took him to his doctor s office today but his regular doctor is on vacation and the covering physician had no idea what it was. They give him a lotion and sent them on their way. What is this condition? Should we be more concerned? The plan is to take him back in tomorrow. Thank you for your time.