Yes there are, but people normally do not fully understand the scientific definition of the word, and what really makes someone a psychopath.
Well I would explain but I would suggest you just google the word and read some pages(from scientific articles or Wikipedia, so you don't get some idiot trying to explain) the short answer is someone who has no empathy or as new studies show psychopaths can switch it off.
If you want to know more you are going to have to research a bit it is a big thing and even now therapists don't fully understand them.
Legitimate psychiatrists don't really use that term anymore. My therapist laughed when I suggested I might be one.
Or narcissism. Psychopathy was sometimes thought of as the combination of the two.
I think I have Asperger's. I don't think Autistics generally lack emotions, they just work differently. They often lack empathy for other people because of differences in thinking, but their emotions can sometimes be overwhelming. Not in my case, but from what I have read.
Psychology isn't like medicine where there's an accurate diagnosis. A medical doctor gives you a test for some disease that comes back positive if you have it. A mental illness is meant to be descriptive of a certain set of symptoms, it's not a condition that you either have or you don't. Well, Asperger's might be. But generally it's just a way to describe certain behaviors or a way of thinking, not the cause of such.
That sounds a lot like me too. But it is a big world, there's always a chance somewhere.