In the context of dissociative identity disorder (DID), an "alter" refers to an alternate identity or personality state that exists within the same individual. These identities are also commonly referred to as "alters" or "alternate personalities."
DID is a complex and rare dissociative disorder in which a person's identity is fragmented into two or more distinct personality states. Each of these personality states, or alters, may have its own unique characteristics, behaviors, memories, and perceptions of the world. They can vary in age, gender, mannerisms, and even language. These identities may also have different names, and they can be aware or unaware of each other's existence.
It's important to note that dissociative identity disorder results from severe childhood trauma or abuse. The development of different alters serves as a coping mechanism to protect the individual from overwhelming emotions or experiences. The dissociation, or fragmentation of identity, allows the person to mentally escape from traumatic events.
Now, to answer your second question, yes, all alters within an individual with DID share the same physical body. The different personality states exist within the same person, and they do not represent separate individuals in the traditional sense. These identity states are facets of the same person's mind.
When an alter is in control or "fronting," they are assuming active control over the body and may present themselves as the dominant personality at that moment. The process of switching between alters can be automatic, gradual, or triggered by certain events or circumstances.
It is important to approach DID with empathy and understanding, as living with this condition can be challenging for those who experience it. Proper diagnosis and therapy with a qualified mental health professional experienced in working with dissociative disorders are essential for individuals with DID to receive appropriate treatment and support.