Background:

Dithranol is highly effective in the treatment of psoriasis.Target: OthersDithranol accumulates in mitochondria where it interferes with the supply of energy to the cell, probably by the oxidation of dithranol releasing free radicals. This impedes DNA replication and so slows the excessive cell division that occurs in psoriatic plaques. In addition Dithranol may act by reducing the elevated levels of cGMP that occurs in psoriasis.

[1]. http://en.wikipedia.org/wiki/Dithranol