Fridgidity takes place when:
-Saturn is lord of Lagna aspected by Mars or Kethu.
-Lagna is combined with Rahu and Saturn.
-8L is hemmed in between Rahu and Saturn and is devoid of beneficial aspect of Jupiter.
-Rahu and Saturn combine with the Moon.
-Ketu and Saturn or Mars and Saturn afflict the Moon.
-Mercury is 8L and the 8th house is tenanted by Saturn-Rahu or Saturn-Kethu.