CRPS 1 / RSD - May get worse if left untreated and can become irreversible   Severe cases of Frozen Shoulder Syndrome can be associated with Complex Regional Pain Syndrome 1 (CRPS 1) - formally known as Reflex Sympathetic Dystrophy (RSD) or Sudeck’s Atrophy This condition can be a serious and unwelcome complication of frozen shoulder syndrome. In some cases the CRPS 1 may precede the onset of a Frozen Shoulder. The average age of CPRS sufferers is 42, which fits into the “younger” frozen shoulder sufferer profile. The condition is also commonly associated with insomnia, another frozen shoulder...