If One Alter Has a Disorder or Condition, Do All the Alters?

The general understanding is that if a disorder is something that comes from life experience (PTSD, etc.), singular alters can have that disorder without other alters having it. However, if the disorder comes from birth/genetics (autism, etc.), that will affect every alter in the system. That being said, it’s important to recognize that every alter might manage that disorder differently, and the disorder might present completely differently. One alter’s ADHD symptoms might seem much more ‘extreme’ from the outside than another’s, simply due to how they feel about it and how they manage it.

Similar things can apply to allergies, diseases, accommodation needs (things like glasses, wheelchairs, canes), and more.

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