to change. They can grow extra branches, a process called sprouting. This sprouting makes the DRG become overly sensitive to chemicals from the sympathetic nervous system, like catecholamines. The result? Neurons start firing too much, a state known as hyperexcitability.
This is why stress can sometimes make fibromyalgia pain worse. When your sympathetic nervous system (your fight-or-flight response) is activated, it can trigger these hypersensitive sensory neurons to fire. To make matters worse, this problem of overactive pain signals going up to the brain is often combined with a reduction
