I am 10 months out of TX, and while the L'hermitte's has lessened somewhat, I have found that a rise in body tempurature, such as with running or taking a hot shower, can bring on symptoms.

Left tonsil SCC, HPV+. T2N0M0. Tonsillectomy 3-07, bilateral radiation, cisplatin 3x, Tx completed 6-06. Clear PET 4-01-2008.
Thyroidectomy 5-9-08, resulting in permanent surgically-induced hypoparathyroidism and adrenal problems. Bummer.