It has a bluish complexion resembling smoke, sinful, wicked, irreligious and of faulty logic. He represents old age and maternal uncle. Rahu usually behaves like Saturn.
It is only the severed head of the Rakshas and since all our senses are located here, makes the person under its influence, very materialistic and selfish in acquiring it. Though the person does become very street smart and can give good advice to others, it usually makes the native over confident and eventually takes wrong decisions for his own self.
Diseases- It gives fears, phobias and usually a wrong diagnosis of any prevailing ailment. Sleep is usually disrupted by bad dreams or fear of the unknown.