somatization
Concise Oxford English Dictionary © 2008 Oxford University Press:
somatization /səʊmətʌɪˈzeɪʃ(ə)n/ (or somatisation /ˌsəʊmətʌɪˈzeɪʃ(ə)n/)
▶noun Psychiatry the manifestation of psychological distress by the presentation of bodily symptoms.
'somatization' also found in these Oxford entries:

