It's not uncommon for people to get muddled over the difference between obsessions and compulsions, so I'll begin this Sharepost by highlighting the differences. Obsessions are thought processes whereas compulsions are actions. In obsessive compulsive disorders (OCD) you won't be surprised to learn these two processes are intimately linked. But focusing on obsessions it becomes clear some fairly common features emerge.
The first of these features, or characteristics, is that the thoughts...

