What is the prognosis for complex regional pain syndrome?

I- The prognosis for CRPS is generally favorable, with 74% of patients experiencing spontaneous resolution of symptoms.
II- Prolonged misdiagnosis and delayed initiation of correct treatment can lead to significant chronic disability, with up to 50% of patients not receiving symptomatic treatment before the year with irrecoverable sequelae.
III- Early treatment within the first three months of symptom onset will improve the course of the disease.
IV- 80% of patients who receive symptomatic treatment in the first year improve significantly.