diagnose

diagnose /ˈdajəgˌnoʊs/ verb
diagnoses; diagnosed; diagnosing
diagnose
/ˈdajəgˌnoʊs/
verb
diagnoses; diagnosed; diagnosing
Britannica Dictionary definition of DIAGNOSE
[+ object]
1 
a  : to recognize (a disease, illness, etc.) by examining someone
— often + as
b  : to recognize a disease, illness, etc., in (someone)
2 
: to find the cause of (a problem) — often + as