Why do my symptoms get worse under fluorescent lights

This is actually common. Many people with ADHD have sensory sensitivities. Fluorescent lighting can flicker subtly and create visual overstimulation. That constant low level input can tax the nervous system. When sensory load increases, attention decreases. You may feel scattered, irritable, or cognitively fatigued. It is not imaginary. It is your brain filtering more than it prefers. Practical adjustments like natural light, softer bulbs, blue light filters, or tinted glasses can make a noticeable difference.