Serious ulcers that can puncture your face,
Rodent Ulcer 80 120 850 5160 (sq 2000 4000 8500 9750 3557-2 4345 5150) Hz
Ulcer Aphthous 50 410 800 5170 (sq 4250 1193-4 3573 527 6627-1 7890) Hz
Rectocolitis Ulcerative 490 (sq 2700 1700 3800 8700 9620 1500 4340 5920 8500) Hz
Buruli Ulcer 50 370 830 2500 3000 (sq 7330 9575 1750 2697-1 3550-8) Hz
Behind the eyes they can cause blur vision.
Good luck.