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Background: Hyperglycemia is common in the early acute stroke phase especially in patients with diabetes. To the best of our knowledge, no study has evaluated the course of hyperglycemia in patients with diabetes during the post-stroke recovery phase., Methods: It was an observational study conducted in Tabassom Rehabilitation Center for Stroke Patients, Tehran, Iran, 2018-2021. Forty-seven consecutive patients with diabetes and stroke were enrolled and included if at least 3 months had passed from their stroke . Any change in glycemic control before and after stroke was controlled by monitoring drugs used for diabetes treatment and laboratory results. To assess categorical variables, the Pearson chi-squared test was used. Quantitative variables before and after the stroke were analyzed by the paired sample t-test., Results: The mean age was 63.6 ± 6.9 years, and 22 patients were women. The median time from occurrence of stroke to the first visit was 5 months and 6 days. Glycemic control improved among patients with diabetes during the post-stroke recovery phase. There was a significant decrease of 0.7 ± 1.3 % in HbA1c ( P = 0.001). The number and the dose of drugs needed for diabetes treatment decreased. No significant correlation could be found between changes in HbA1c and weight., Conclusion: Despite the initial increase in glycemia in patients with diabetes in the acute phase of stroke, glycemic control improves after stroke, and often, it is necessary to decrease diabetes drugs to prevent hypoglycemia. This topic is important and should be addressed by guidelines and institutions involved in the care of patients with diabetes and stroke., Competing Interests: The authors declare that they have no competing interests., (© 2024 Iran University of Medical Sciences.)