Reoccurring problem in my throat.

Since June 2025, I have been experiencing recurring symptoms. I feel a constant sensation of something dripping inside my throat, which feels like post-nasal drip. Along with this, I develop a runny nose, generalized weakness, dizziness, and occasionally fever. These symptoms recur almost every month. I have consulted multiple doctors and have taken antibiotic courses for a prolonged duration, but the problem has not been resolved permanently. I also completed a course of Montelukast + Levocetirizine, which provided only temporary relief. Despite treatment, the root cause has not yet been identified, and the symptoms keep returning. I am concerned about the frequent recurrence and would like further evaluation to determine the underlying cause and appropriate long-term management.