First Dorsal Interosseus Trigger Point Diagram

This diagram also includes the abductor digiti minimi, the second dorsal interosseous, and Heberden's Nodes.

Symptom Area: 
Forearm & Hand Pain
Primary Symptoms: 
Secondary Symptoms: 
First Dorsal Interosseus (Wikipedia)

The X's represent the Trigger Points. There is no difference between the black and white X’s. The red shaded area is the referred pain caused by the Trigger Point and the darker red means more people experienced pain in that area.