I don't think i was that paranoid in childhood but the bits i have put in bold really stand out.
Paranoid personality disorder may be first apparent in childhood and adolescence with solitariness
, poor peer relationships
, social anxiety, underachievement in school
, hypersensitivity, and peculiar thoughts
and language. These children may appear to be odd or eccentric and attract teasing.
The course of this disorder is chronic.http://www.mentalhealth.com/dis/p20-pe01.html
The poor peer relationships were a product of difficulty with social interaction from a very young age. The teasing especially as a teenager was because i was physically and socially awkward. The social anxiety developed in line with the bullying/teasing as a teenager. The underachievement at school could partially have been due to mental illness, but also to having specific, unrecognised, areas of cognitive difficulty that adversely affected me as school work got more complex( i fit the profile for nonverbal learning disorder(which has similarities to aspergers) quite well).
What i would say is that the paranoia didn't just develop in a vacuum,devoid of precipitating factors.