a therapist does not 'do' anything per se, but rather delicately helps the patient do the job, guiding them through; hence the 'coping'.

т.е. психологу справляться не нужно, нужно справиться пациенту, со своими акцентуациями. сформировать себе адекватную самооценку, стабилизировать свой уровень тревожности -- под чутким руководством специалиста и вместе с ним.

как-то так, пожалуй.

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Note added at 7 hrs (2016-02-19 15:21:26 GMT)
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Excludes: accentuation of personality traits (Z73.1)
Multiaxial Classification of Child and Adolescent Psychiatric Disorders
https://books.google.com.ua/books?id=lMbLCgAAQBAJ&pg=PA166&d...

Hyperarousal: A state of increased psychological and physiological tension characterized by such effects as exaggeration of startle responses, insomnia, fatigue, and accentuation of personality traits.
What Nurses Know...PTSD
https://books.google.com.ua/books?id=wxlMsMavBoMC&pg=PA228&d...

and plentu of other exact match hits for publications in the field.

The term was introduced by a Russian psychiatrist Andrey Lichko, hence its 'non-native' appearance. Btw, if you want to buy his book on Amazon, that's what your query would look like in English:
Psychopathies and Accentuations of Character in Adolescence

Bottom line is that practitioners are aware of the term and its meaning, as it is. If the text is intended for professionals, no need to worry, the word 'accentuations' works just fine.
If it's for a general audience, a footnote or explanation in brackets could be added, to make sure the message gets across.

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Note added at 8 hrs (2016-02-19 15:22:07 GMT)
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*plenty

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Note added at 8 hrs (2016-02-19 15:28:49 GMT)
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a couple more:
Functional Rehabilitation in Neurosurgery and Neurotraumatology:
In adolescents without CPTH accentuations of character are discovered only inhalfthe cases, mainly of the hyperthymic type..
https://books.google.com.ua/books?id=iHGhBQAAQBAJ&pg=PT300&l...

Emotions are intensifications or accentuations of character traits; they are forms of psychological movement, limited in time.
Contemporary Theories and Systems in Psychology

https://books.google.com.ua/books?id=2KigBwAAQBAJ&pg=PA294&l...