Yes it is. As far as compulsive behavior we all have some slight traces of it in ourselves. For example I can't go to bed until I check all windows and doors to be sure they are locked. It's no big deal to me and certainly doesn't bother my husband. If I should forget and go to bed, I'll get up and check. Other people may nail bite, twirl their hair until it hurts, some will constantly wash their hands, some have germ fetishes or other fetishes. As long as it doesn't take a great deal of time out of your life then it shouldn't be all that harmful.
Yes, it is possible to have a mild PTSD-like reaction following less severe stress.
The worst category for a disorder/disability would be profound.
It depends how mild it is.
cyclothymia
severe
The term for a condition characterized by chronic, mild bipolar disorder with mood swings is called cyclothymia.
In season 8, Conor whas diagnosed with Asperger's Disorder. Asperger's Disorder is a very mild form of Autism
I am not familiar with the term Abnormal Movement Disorder. Perhaps you are referring to Tourettes Syndrom. Tourettes is a neurological disorder that normally appears in childhood. It involves involuntary movements of the limbs, and may also involve involuntary noises and sounds made by the person. I do not think there is any cure for it, and symptoms are normally mild.
Opinions are divided on that. Some clinicians say that mild cases of schizophrenia are possible, and are in fact true in cases of paranoid, schizoid, and schizotypal personality disorders. Others say that schizophrenia is schizophrenia, and you cannot have a milder form of it.
Yes.
Cyclothymia is a low-level bipolar disorder, characterized by alternating periods of mild depression and mania ("hypomania") for extended periods of time.
The differiencess is the same as between what you have and what normal people have.