5th house belongs to Sun. It is also affected by Jupiter. If Jupiter, Sun or Moon is in 4th, 6th or 12th house then one's financial condition will be excellent and the native will have five sons. Ketu becomes benefic by itself after twenty four years of age.
If Ketu in 5th house is malefic then the native suffers from asthma. Ketu gives malefic results till five years of age. Sons will not survive. Livelihood starts after twenty four years of age. The native is unlucky for ones sons.
1. Donate milk and sugar. 2. The remedies of Jupiter would be useful.