The development of arachnoiditis can vary from person to person, but it often progresses through three primary stages. In the initial stage, individuals typically experience sporadic pain, discomfort, and tingling sensations, along with inflammation of the arachnoid membrane.   As the condition advances to the second stage, the formation of scar tissue intensifies, causing nerves to adhere more closely to each other and to the dura mater, one of the protective spinal membranes.   In the third and final stage, there is a complete constriction of the nerves, resulting in excruciating pain with every movement. Constant and heightened pain signals emanate from the nerve root ganglions, continuously transmitting pain sensations to the brain, leading to chronic pain and persistent fatigue.