Hi Elisabeth. I can't do anything about the ME, but I do know about back pain. My wife has a spinal fusion and 4 herniated disks from an accident. She has managed a full recovery following surgery and with the known limitations (can't pick up heavy stuff or ride rough rides) lives a full life.
May I suggest that your husband take an epsom salt bath in hot water, starting around 102 degrees? He'll have to wait gradually until the water cools enough for comfort. After about 20 minutes his muscules will loosen up and unlock slightly. If possible, he should then attempt some light, very light stretching, like sitting on the floor and touching toes, if that will help stretch the area in question. There are more effective strethes, but this is a safe one that I can actually describe. If you have a theraputical massuese availabel today, it'd be ideal to see them. Only someone you trust. Finally, following the massage after the hot bath, an ice pack on the area afflicted for about 20 minutes, especially if massage is applied. the ice pack will help reduce the swelling of the irritated muscles and the cool will provide relief. Then he needs to rest and watch sports.
If your husband is reading this, pal, you owe me a beer for the part about sports. Just kidding folks. This is a regiment I go through for an area in the center of my spine, and the recommended regiment my wife goes through on difficult days. Except for the part about sports.
All the best and I hope he finds relief. It's certainly no fun...
Hey thanks for the advice.. he went to chiroprator before.. and it did help but.... it costs too much money and he thinks he can get thru it..... i will tell him what u said..