I think if you read the signs and symptoms of many emotional behavioural etc disorders, most people would find one or two that seem to describe them well. This is because most of these disorders are characterised by normal personality traits and behaviours and the difference is in the degree and extent to which they are experienced. Therefore diagnosis needs to be done by a skilled practitioner who can assess whether the degree of the symptoms fit with the diagnostic requirements, and who have greater knowledge of the norms against which any symptoms are measured.