I don't think most people like to appear in pictures, especially pictures they haven't taken themselves. People get used to the mirror image version of themselves, which gives a reverse perception of how they really look. Most people aren't used to the way they look in pictures and don't like it, because it's not the face they're familiar with in the mirror.
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Prof-Diagnosed: Aspergers Syndrome (I still call it that!), Dyspraxia, Dysgraphia
Self-diagnosed: ADHD-PI, Social Anxiety, Depression
Treatment: 5-HTP, Ginkgo Biloba, Omega-3, Pro-Biotics, Multi Vitamin, Magnesium