Hello doctor, My mother in law who is 67 years old is suffering from severe back pain whose reason is unidentified by several doctors from many years, pain arise mostly after doing some work which resulted her to lie down most of the time, some doctor said this is due to gap between the bones and some says this is due to the pressure that occurs on nerve, reason is still unknown and now pain killer is also stopped affecting the body pain , if someone could suggest any treatment or solution then she may get relief from the pain which she is suffering from many years