Objective: The study assessed the effectiveness of a psychological intervention based on psychoeducation and cognitive-behavioural counselling for hypertensive patients. Methods: Thirty-three people were selected to participate in the study as they reported a T score [greater than or equal to] 63 only in a symptom dimension of the "Symptom Checklist-90-Revised" (SCL-90-R). Quality of life was also measured using the "Short Form Health Survey" (SF-36) at baseline. Both questionnaires were used to re-assess patients at the end of the programme (T1) and 6 months later (follow-up, T2). Body mass index (BMI) at T0 and T2 was also calculated. Results: A reduction of psychological symptoms and a slight decrease in BMI were observed with an increase in the perceived quality of life. Conclusion: Validating effective interventions for the reduction of psychological symptoms is a goal of primary importance because they can represent risk factors for hypertension.