I would continue using the points recommended for that particular condition. A person with the chronic pain will get more relief as they make small lifestyle adjustments - perhaps some light movement and stretching, and taking a look at how to reduce overall stress and tension.
Stress reduction is a large endeavor, but that is frequently what is needed once something becomes chronic. Our chronic pains point toward a chronic over-doing in some area of life, which leads to an imbalance somewhere in the Qi. This gives rise to Qi stagnation, which gives rise to any number of manifestations (physical pain being one of them).