ADHD and lying, self focused, any thoughts...

 

Just wondering peoples thoughts on this.  My husband I believe has ADHD severely (undiagnosed).  My younger brother also has it (diagnosed).  Both seem as individuals to have some similar traits.  They like to focus on themselves, what they want to buy or what they can get out of something, and also lie a lot (white lies, and some big ones).  I'm not saying they are bad people, they just tend to think about themselves over other people and lie a lot. I've gotten used to it with my husband, that if he wants to avoid a certain topic hell just tell a lie to get out of it, but I'm usually good at discerning that hes lying.  Sometimes I wonder if this a also a part of ADHD?