Jataka Tattva · by Mahadeva
Chapter 8 · Enemies, Wounds, Illness: the 6th House
षष्ठविवेकः
ज्ञेन्दुलग्नपा राहुकेतुयुताः कुष्ठी ।
Say Mercury, the Moon and the lagna (rising sign) lord are joined with Rahu and Ketu. Then the person may suffer from leprosy. (Rahu and Ketu are always opposite; this likely means Rahu or Ketu.)
Classical view, not medical advice.
षष्ठेशे सारेऽङ्गे पित्तकुष्ठी ।
Say the 6th lord is in the 1st house with Mars. Then the person may suffer from leprosy of the pitta (the bile humour) kind.
समन्देऽरीशेऽङ्गे कफकुष्ठी ।
Say the 6th lord is in the 1st house with Saturn. Then the person may suffer from leprosy of the kapha (the phlegm humour) kind.
सूर्यषष्ठेशावङ्गे रक्तकुष्ठी ।
Say the Sun and the 6th lord are in the 1st house. Then the person may suffer from red leprosy.