Background: Scapular dyskinesis (SD) is a common clinical finding characterized by the alteration of normal scapular position or motion during coupled scapulohumeral movements. This dysfunction often leads to increased work of breathing, dyspnea, and significant functional limitations in the upper extremity. Proprioceptive Neuromuscular Facilitation (PNF) is a specialized therapeutic approach that uses neuro-physiological principles to facilitate muscle response through cortical stimuli and resistance. Objective: To conduct a systematic review of the literature on the effect of PNF techniques on pain intensity and functional outcomes in patients diagnosed with scapular dyskinesis. Methods: A comprehensive search of major databases was conducted to identify randomized controlled trials (RCTs) and experimental studies investigating PNF in populations with scapular or shoulder dysfunction. Studies were included if they reported outcomes on pain (NPRS/VAS), functional scales (SPADI/DASH), or range of motion. Results: This review identifies that PNF techniques significantly reduce pain and improve functional mobility. Evidence suggests that PNF effectively strengthens respiratory and stabilizing muscles, reduces dynamic impairments, and improves overall quality of life. Conclusion: PNF is an effective non-pharmacological adjunctive therapy for reducing pain and improving functional status in patients with scapular dyskinesis.