Hi, I have a hard lump on the bottom on my back right in the centre that feels like bone. It s been there for about a year now and it s slowly getting larger. The pain isn t extremely bad but more uncomfortable to where I can t lean against anything like a chair or even sleep on my back. If I stand too long it gets sore and goes numb and feels like pins and needles
There are different pathologies that can present with a lump. That can be a skin or soft tissue tumor, for example a lipoma or atheroma with may have been infected lately causing pain, it may be a skin infection, or even a subcutaneous Chat Doctor.  There are also some congenital pathologies of the spine that have also to be excluded. You can take NSAID like Ibuprofen 400\u00a0mg twice a day, for the pain and the swelling for 7-10 days or until you go to your doctor.