Something to keep in mind when setting about the work of praying for the healing of another person:
1. Man was originally made in the image of God. ("Let us make man in our image." -Gen 1:26)
Its' important to bear in mind what God IS in order to be aware of the 3-part construct of the human being standing in front of us.
God is a spiritual being. ("God is Spirit... John 4:24)
God is a moral being. ("The Lord is righteous... He will do no unrighteousness." -Zeph.3:5)
God is a materially creative being. ("God said, 'Let there be light', and there was light." -Gen. 1:3)
All these elements carry with them God's power and authority, all are interwoven, and all will be "in play" when we set about to pray for someone.
2. The Temple, the dwelling place God designed for His habitation, was also a 3-part construct. ("Make it after the pattern I show you... Outer Court, Inner Court and Holy of Holies" -Ex. 25:40)
3. Man is the temple of God. ("Don't you know that you yourselves are God's temple and that God's Spirit lives in you?" -I Cor. 3:16). So man is a 3-part aggregate of spirit, soul and body.
What this all adds up to is that whole-person healing may very well involve the interplay of the spiritual, soulish and physical realms and dynamics. And that we, as prayer practitioners, will have to pay attention to what God may be doing in more than just the physical realm when dealing with some malady brought before us.