OSDD-1b: Understanding the Initial Dissociative Disorder

Dissociative disorders have garnered much attention in recent times, stemming from the difficulty in identification and treatment of such psychological imbalances. OSDD-1b is one such dissociative disorder, where individuals experience transient dissociative experiences frequently, with little or no unified identity. The current article aims to elucidate upon this particular disorder, its symptomatology, diagnostic criteria, and its similarities and differences with other dissociative disorders. We’ll also discuss the frequently asked questions about the disorder in detail.

What is OSDD-1b?

OSDD-1b or otherwise referred to as Other Specified Dissociative Disorder-1b is a subtype of dissociative disorder. It has only recently been differentiated from DID (dissociative identity disorder) and placed in a separate subcategory. Previously, such individuals were categorized under DID because they had dissociative experiences and there was little understanding or recognition of the fact that they may not have a unified identity. Nevertheless, OSDD-1b still remains a dissociative disorder characterized by recurrent dissociation, including frequent and often intrusive, or disruptive, transitions to alternate identities or other manifestations of the dissociative Central Nervous System response to adverse experiences.

What are the symptoms of OSDD-1b?

The symptoms of OSDD-1b can be baffling and debilitating, making it hard for affected individuals to cope with everyday life. The most distinguishing feature of OSDD-1b is the transient, incompletely formed and at best limited identities that individuals experience. Often, these identities are very different from the individual’s normalized state, and such individuals may have difficulty reconciling contradictions in their beliefs, emotions, and memories.

Furthermore, individuals with OSDD-1b may find it difficult to remember daily events, and may find their sense of time is distorted. They may also engage in behavior that is unpredictable, or which they later cannot explain. Such individuals may also have heightened emotional responses or even emotional numbness at times. OSDD-1b may also result in physical symptoms such as headaches, abdominal pain, or unexplained body pain.

How is OSDD-1b diagnosed?

Like most diagnoses for psychological illnesses, there is no definitive test that can diagnose OSDD-1b. It is usually diagnosed based on a series of clinical interviews and observation of the symptoms exhibited by the individual. The clinician will ask questions about the individual’s behavior when they experience shifts in their identity, their emotional responses, their memories from the experience, and whether the symptoms have affected their day-to-day functioning.

The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) outlines the specific criteria for OSDD-1b. These are:

1. Recurrent episodes of dissociation and/or spontaneous pastiche states (where one perceives elements of their own identity in seemingly other people)
2. Recurrent disturbing recollections or beliefs associated with dissociative episodes or spontaneous pastiche states
3. Symptoms cause clinically significant distress or impairment in academic, social, occupational or other areas of functioning.

How does OSDD-1b differ from DID?

DID used to encompass the subcategory of multiple personality disorder. However, in recent years, it has been determined that not every individual with a dissociative disorder experiences the complete lack of unified identity or alternatively, divided parts or subpersonalities, which were previously believed to be defining factors of DID.

DID is identified by the presence of two or more significantly different identities, each with its unique set of beliefs, memories, and behaviors, and may be associated with significant amnesic barriers between these identities. OSDD-1b, however, has several features that differentiate it substantially. One significant difference is that the identities or states experienced by individuals with OSDD-1b are not fully formed, meaning these individuals may not be entirely aware of the existence of these alternate states or identities. Often, they can be mistaken for acute dissociative experiences or ‘dazed’ moments.

People with OSDD-1b also experience limited memory gaps and often have beliefs that can’t be fully explained by their current personality. Individuals with OSDD-1b may also have more stable symptoms compared to individuals with DID, which can fluctuate over time.


1. What causes OSDD-1b?
There is no known exact cause of OSDD-1b. However, it is believed that it is associated with past and repeated trauma or abuse, that has caused disruptions in the neural networks of the brain. The dissociation could be the brain’s coping mechanism to protect itself from stressors.

2. How can OSDD-1b be treated?
Psychotherapy is the most effective treatment for OSDD-1b. The aim of therapy is to work through the associated trauma and disrupt neural connections to create new, healthier ones. Clients can receive cognitive-behavioral therapy, attachment-based therapy, or any form of talk therapy to address the symptoms of the disorder.

3. Is living with OSDD-1b manageable?
Yes, people with OSDD-1b can lead healthy and productive lives with proper treatment and management. Early diagnosis and treatment may minimize the severity of the symptoms, allowing individuals to cope better with it.

4. Can medications be used to treat OSDD-1b?
Currently, there is no medication specifically formulated to treat OSDD-1b. However, certain medications that affect mental conditions like anxiety, depression and such can help reduce the symptoms associated with the condition.


OSDD-1b is a dissociative disorder that has only recently been differentiated from DID. It is characterized by recurrent dissociation, including frequent and often intrusive transitions or other manifestations of the dissociative CNS response to adverse experiences. Treatment often involves talk therapy, and early diagnosis and treatment can help individuals manage their symptoms and lead a healthy life.