Hello and welcome to HCM. Thank you for your query. A bruise-like discoloration in the lower (lumbar) spine region could point towards a number of conditions. Let me first list them out for you and then accordingly guide you into finding the cause. They are: -Bruise (which should have disappeared by now) -Muscle strain (requires rest and no strain) -Hematoma (collection of blood; can be drained if present) -Whiplash injury (is a serious injury) -Stones in renal tract -Other kidney disorders or infections even leading to kidney failure -Direct injury -Bone infection (osteomyelitis) -Thrombocytopenia (low platelet count) -Fracture of the spine (will severely affect mobility) -Severe pulmonary insufficiency (will also have serious breathing difficulties) -Skin disorders -Tick-bites -Infections in surrounding organs -Herpes zoster infection -Tetanus (serious) As this has already lasted for more than a few months, I do not see why we should delay any further. Please go about an elaborate examination of the region with an x-ray to start off with, blood parameters (with emphasis on renal profile), get the region examined by a skin specialist (dermatologist), an ultrasound of the region along with of the abdomen and pelvis. Please go ahead with the above mentioned investigations at the earliest. I hope and pray your daughter is fine and that this bruise-like rash dissapears naturally. I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications. I would gladly help you. Best wishes.