Rheumatoid arthritis
According to Henry W. Wright
Possible spiritual roots
Self-rejection / self-hatred / self-bitterness / guilt—a conflict directed against oneself.
In his model, this inward attack is reflected in an autoimmune response: white blood cells attack tissues, cartilage, and joint structures.
Rheumatoid arthritis — for Wright, conflict with oneself is the key area for spiritual discernment, especially self-rejection, self-hatred, bitterness against oneself, and guilt.
Spiritual response
The spiritual response includes receiving God's love, forgiveness, rejecting self-condemnation, and prayer for healing of heart, identity, and body.
Sources
Henry W. Wright — A More Excellent Way (2009, English), pp. 228–229; 209; topic: Rheumatoid arthritis
A More Excellent Way — https://resources.beinhealth.com/products/amew
The 8 Rs to Freedom — https://www.beinhealth.com/8-rs-to-freedom/