Rahu in 6th House. 

So, lets see what Rahu can do in 6th house without any conjunction or aspect from any other planet. 1st lets see what these 2 things represent - 

Rahu represents illusion, foreign lands, foreign things (foreign as in unknown things. So, for someone living in Punjab, culture and rituals of Kerala is also unknown and hence Foreign), Drugs, Medicines, any type of intoxication, fame, wealth, success, obsession, past-life left-over karma, movies, television, online world, cheating, imagined fears, unusual things, unique things, creativity, rule breaker. Rahu also blows things out of proportions. 

6th house is 1st of Dushthana Houses (houses # 6, 8 and 12) and 2nd of Upachaya Houses (houses # 3, 6, 10 & 11). 6th house represents things like diseases, debts, obstacles, enemies, disputes, competitions, litigations, under privileged people, pets, daily routine life, colleagues at work place etc.

Aspect-wise, in Vedic Astrology, Rahu has 5th and 9th house aspect. He is unable to impact 7th house from its place as Ketu is sitting there, which is the other axis of Rahu and represents all those things which are non-Rahu. 

Now, Rahu is at the place where it wants to be. Rahu loves to deceive people and in the house of disputes and enemies, it gets ample opportunity to deceive its enemies. Here, Rahu can make a person smart advocate, very good doctor, and banker etc. As in all these fields Rahu gets every opportunity to deal with obstacles and deceive it. But at the same time, the person himself can not be reliable. As 6th house is house of divorces, mainly they become divorce lawyers. It also shows that they can have some very rare type of diseases and they should always take a 2nd opinion on their illnesses. 

From 6th house, Rahu aspects 10th house of career and gives person career in all these things which are written above. They grow in career with fame. More people know them, better they will be in Career.  

Rahu's next aspect goes to 2nd house of wealth. It shows that they can get lots of wealth through their actions of 6th house but they may not be able to save the same. 

Thanks,

Swami Premanand Bharti