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Help get your loved one treatment. Know the warning signs of an upcoming episode. Keep track of your loved one’s possessions. Monitor for self-harming tendencies.

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Whether it is medication for other disorders that often co-occur with DID, such as depression or anxiety, or whether it is making sure that your loved one goes to his appointments with his therapist, you will need to help him with both of these things. Keep track of what medications he is supposed to receive every day and make a schedule for therapy sessions and other appointments he may have. If your loved one is having trouble keeping a schedule, try creating a calendar with his appointments in it. If he has a smartphone, you can add a calendar to his phone that will give reminders of his upcoming appointments. While each person is different, there are some signs that nearly everyone with DID experiences before an episode or personality switch occurs. It can help to detect these signs so that you can prepare yourself mentally to deal with this person's alter. These signs include:  Recurrent flashbacks to abuse or bad memories. Depression or extreme sadness. Frequent mood swings. Memory loss. Aggressive behavior. Feelings of numbness. When your loved one experiences a personality shift, memories from his other personalities do not necessarily carry over. This can make it very hard to keep track of important items like wallets, cell phones, etc. Create an inventory of your loved one's important items and place notes or stickies on or inside the items with your name and phone number on them. That way, anyone who finds your loved one’s item can call you to return them. It is also important that you have a copy of all of your loved one’s important documents, including social security card, medical information, passwords, etc. People suffering from DID have almost always experienced abuse during childhood.  Self-harming behaviors, such as suicide, violence, substance abuse and risk-taking, are common in people who have DID. These behaviors tend to occur in those who have suffered abuse because they are used in an attempt to end their feelings of shame, horror, and fear spurred on by past abuse.  If you notice that your loved one has started developing self-harming behaviors, call your therapist or the police right away.