What causes severe muscle pain brain fog numbness tingling food alergies eye lid tick chemical allergies swollen lymph nodes and glands inside cheeks?

Multiple symptoms. Many times when person develop multiple symptoms, they seek one unifying diagnosis. Unfortunately, one cause may not be the answer. Seek an opinion for each problem. I would start with the swollen lymph nodes. The evaluation of swollen lymph nodes may be best addressed by a general surgeon who might need to perform a biopsy to establish an accurate diagnosis.
Mysterious. Sounds like you were exposed to something. See an allergist to see if your various symptoms have anything in common.