I am from India, suffering from LED strains for last 10 years. You can find various posts from me on this forum how I am managing these symptoms.
Symptoms - Neck pain, Shoulder pain, brain fog, difficult to focus the screen, elevated heart beats
For the last 1 year, I was able to manage the symptoms with Old ccfl monitor Dell u2410 with blue light blocking AMBER glasses with my Macbook M1 work laptop. This setup was savior for me.
Recently this good setup started giving me issues again. Troubles started with my phone (iphone 15) as well.
When I investigated what changes in recent times, I found out that I upgraded my Wifi and Mobile phones to 5G network. Realizing this, I reverted the network back to old 2G wifi router, surprisingly my symptoms disappeared, felt better with the old 2G router networks.
Summary - somehow 5G signals may interfere with your good setup and make it worse. Please post if you also encountering similar issues with 5G.