I suspect not... In no small part because after listing out the major symptoms of OCD the final differential is the same as for PTSD (I've bolded it, section D, as well as definition pt2)... That the obsessions or compulsions are not better explained by another disorder. It then goes on to list many, many, many examples of things which may share symptoms with OCD, but whose symptoms better fit another disorder. In this case? PTSD. I could be wrong, as PTSD is not specifically listed. But neither are many other disorder that clearly fall under the example umbrellas. Shrug. I could give you chapter and verse on ADHD, but OCD isn't my specialty.
My knee-jerk, however, is that Trauma is one of the few (possibly only) sections of psychology that deals with reality. Instead of a skewed perception of reality. We're not locking our doors 70 times because we think the neighborhood will be consumed by fire, flood, famine if we don't... But because we've had our doors broken down, before. Section 2 is pretty clear that these thoughts and behaviors are not connected in a realistic way with what they are designed to neutralize or protect. PTSD obsessions and compulsions, meanwhile in my experience, are nearly always directly attributed to reality. If a Hypervigilent and somewhat paranoid one.
Again, just my thoughts, reading through the DSMV on it... And I may be wrong.
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DSM-5 Diagnostic Criteria for Obsessive-Compulsive Disorder (300.3)
A. Presence of obsessions, compulsions, or both:
Obsessions are defined by (1) and (2):
1. Recurrent and persistent thoughts, urges, or impulses that are experienced, at some time during the disturbance, as intrusive and unwanted, and that in most individuals cause marked anxiety or distress.
2.The individual attempts to ignore or suppress such thoughts, urges, or images, or to neutralize them with some other thought or action (i.e., by performing a compulsion).
Compulsions are defined by (1) and (2):
1. Repetitive behaviors (e.g., hand washing, ordering, checking) or mental acts (e.g., praying, counting, repeating words silently) that the individual feels driven to perform in response to an obsession or according to rules that must be applied rigidly.
2.The behaviors or mental acts are aimed at preventing or reducing anxiety or distress, or preventing some dreaded event or situation; however, these behaviors or mental acts are not connected in a realistic way with what they are designed to neutralize or prevent, or are clearly excessive.
Note: Young children may not be able to articulate the aims of these behaviors or mental acts.
B. The obsessions or compulsions are time-consuming (e.g., take more than 1 hour per day) or cause clinically significant distress or impairment in social, occupational, or other important areas of functioning.
C. The obsessive-compulsive symptoms are not attributable to the physiological effects of a substance (e.g., a drug of abuse, a medication) or another medical condition.
D. The disturbance is not better explained by the symptoms of another mental disorder (e.g., excessive worries, as in generalized anxiety disorder; preoccupation with appearance, as in body dysmorphic disorder; difficulty discarding or parting with possessions, as in hoarding disorder; hair pulling, as in trichotillomania [hair-pulling disorder]; skin picking, as in excoriation [skin-picking] disorder; stereotypies, as in stereotypic movement disorder; ritualized eating behavior, as in eating disorders; preoccupation with substances or gambling, as in substance-related and addictive disorders; preoccupation with having an illness, as in illness anxiety disorder; sexual urges or fantasies, as in paraphilic disorders; impulses, as in disruptive, impulse-control, and conduct disorders; guilty ruminations, as in major depressive disorder; thought insertion or delusional preoccupations, as in schizophrenia spectrum and other psychotic disorders; or repetitive patterns of behavior, as in autism spectrum disorder).
