Are you questioning me?

[wuncie]

What would the Spanish translation be to this question if it is meant to convey the idea of a person feeling insulted because someone is doubting his veracity or accuracy: Are you questioning me?!?

[poli]

¿Me dudas?
¿Me dudas de mi?--(I'm not sure of this one, but I have heard things like this used as an emphatic expression. I would pass this by a native speaker first.)
¿Ya no me confias?--or something like that.

[aleCcowaN]

¿Dudas de mí? (sorry "me dudas" and "me dudas de mí" are not correct)
¿Me estás cuestionando?

¿Dudas de mí? (colloquial, vulgar) = Do you imply I'm lying?
¿Me está cuestionando? (evolved, formal) = Are you implying I have hidden intentions? or, are you defying my authority?

[Luna Azul]

"¿dudas de mí?" (no es vulgar)

"¿Me estás interrogando?"

"¿pones en duda lo que (hago - digo - mis capacidades, etc)?-

"¿me estás sondeando?"

;)