A frozen shoulder is a sympathetic dystrophy. Water logging of the stellate ganglion makes many of its functions over active. If a person uses the shoulder to an unusual extent such as chopping up wood, or bruises it slightly, the ganglion hopelessly over reacts and instead of mildly increasing the repair, it turns on the full emergency inflammatory reaction. This causes the symptoms of swelling, pain, immobility and even temporary calcification of some of the tissues to immobilise the joint. Treatment to the stellate ganglion will usually resolve this fairly rapidly. Left to itself a frozen shoulder takes 9-months to come on, 6-months at zenith and then 6 or more months to resolve.
Treatment with Interx neurostimulation, Shiatsu and Reflexology. EFT (tapping) can be beneficial.