Whenever someone is thinking they might have a severe mental illness, I always highly encourage them to consult a professional about it. We cannot diagnose you here, unfortunately. A psychiatrist can, however! They will be able to help you figure out what's going on and guide you in the right direction.
With that being said, what you're describing does not sound like DID. It sounds more like OSDD than DID to me. Many OSDD systems describe their "parts" as an extension of the core personality. OSDD alters are usually less distinct than DID alters (this is not always true, though) and a person with OSDD usually (but not always) do not have as much amnesia & black outs as a person with DID does.
Please understand that DID and OSDD are disorders caused by extreme, repeated childhood trauma. If this does not apply to you than you cannot have it. It's possible that someone could have repressed trauma memories (as in, they do not remember them), though. I once did not remember any of my traumas or abuse. Your brain does this in order to protect you. Your memories will start resurfacing when it thinks you are ready and capable to handle them (or something triggers them).
One of my alters posted this information on a different thread and I think it'll be beneficial to you. An acquaintance of mine runs an informative/coping blog for DID systems. I think these articles he wrote will help you get a better understanding of DID:
Symptoms and Origin:
DID develops almost exclusively in children 7 or under, but onset can range up to around 9 years infrequently. DID develops when a child still lacking in concrete identity undergoes extreme repeated trauma. Naturally dissociating, the child in pain replaces their self image with that of another, substituting another better suited to withstanding pain. Memories become fragmented to protect the core personality, who may not be made aware of abuse until later in life. These created personalities, or alters, may assume control separately or together. Because of the nature of this disorder, to protect a young child from pain and negative memories, many are not aware they have this disorder until later in life. Alters are made to protect a hurt child. Repeated and extreme trauma is necessary for DID to develop, usually alongside severe emotional manipulation. New alters can be formed after the initial development when new trauma or large life struggles come up that no preexisting alter is capable of dealing with.
Symptoms of DID are widely varied. The primary symptom of DID is dissociation- a term that is used to describe the severe and chronic disconnection from reality. This can include lapses in memory, “fuzzy” or “blurry” feelings or perceptions of the world, loose or absent sense of self, difficulties making coordinated movements, etc. Dissociation takes many forms. Significant amnesia is required to make a diagnosis of DID, and with many disorders, a significant impairment in normal life functioning must be present.
Always includes: dissociation, amnesia, separate personality states
Usually includes: headaches/body aches/other physical unexplained symptoms, handwriting/voice/typing differences, ease of hypnosis/meditation, mood swings, depression, anxiety, poor eyesight or hearing
Can sometimes include: hearing voices, other hallucinations, inconsistent allergies
People with DID are often diagnosed with other mental illnesses comorbidly.
And another for you:
Do I Have DID?
Have you experienced extreme and repeated trauma before the age of 8? You may not be aware of full extent of the trauma, but you must be aware it is there to be diagnosed. “Natural" systems are not DID. DID cannot occur without trauma.
Do you have large and unexplained gaps in memory and issues forming recent memories? Such as forgetting your childhood, misplacing items, missing hours from your day, coming to in unfamiliar places, etc.
Do you have distinct and separate personalities? You may not be aware of switching occurring, but those close to you may complain of inconsistent memories and personality traits, you may find notes or internet history you don’t remember, etc.
If you meet these, you may have DID. If you meet some but not all, you may have DDNOS/OSDD/USDD or DPDR. Alternatively, dissociative symptoms can be caused by a large variety of other mental health issues, some physical conditions, drug use, etc.
Q. I have these traumas. Is that enough to have DID/OSDD/etc?
A. I don’t know you, bud, and I don’t know what you’ve been through. Everyone experiences trauma differently and what doesn’t affect someone much can shake someone else’s entire world. Try to find a therapist to talk things out with, and try not to push yourself into an extreme right away.
Q. I have a system/headmates but no trauma? Do I have DID?
A. No. DID is far, far more than having headmates or hearing voices. You cannot have DID without early extreme childhood trauma.
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archer