[header] How to help your child deal with your ptsd [title] Explain the condition to your child in easy-to-understand terms. [step] Without an understanding of what you're dealing with, your child may think the way you are acting is their fault. They may become scared and confused. 
While talking about ptsd won't completely alleviate your child's worries, it will open the door for you to discuss it more in the future. [substeps] Depending on your child's age, you will modify your message so that it fits their level of communication.