Background: Guillain-Barre Syndrome (GBS) is an acute, rapidly progressing immune-mediated polyneuropathy characterized by symmetrical muscle weakness, diminished or absent reflexes, and variable sensory impairment. Early diagnosis and a combination of medical and physiotherapeutic interventions are crucial in mitigating the long-term sequelae of the disease. Case Summary: A 25-year-old previously healthy female presented with progressive bilateral limb weakness and sensory disturbances following a febrile illness. Diagnostic workup confirmed the AIDP variant of GBS. She received standard IVIG therapy followed by a structured 30-day physiotherapy program emphasizing neuromuscular re-education, strength restoration, functional mobility, and pain management. Functional and clinical outcomes were documented pre- and post-intervention. Results: Marked improvements were observed in muscle strength (MMT from 1/5 to 4/5), functional independence (FIS from 65/120 to 105/120), and pain intensity (NPRS from 8 to 5). The Hughes Functional Grading Scale improved from grade 4 (bedridden) to grade 2 (ambulatory with assistance). Conclusion: This case highlights the vital role of timely, individualized physiotherapy in facilitating recovery in GBS. A structured, phased approach significantly enhanced motor performance, reduced pain, and improved quality of life.