On page 44 of the Big Book we are asked two qualifying questions:

 If, when you honestly want to, you find you cannot quit entirely, or if when drinking¹, you have little control over the amount you take, you are probably alcoholic². If that be the case, you may be suffering from an illness which only a spiritual experience will conquer. 

¹Engaging in codependent thinking or behaviors  ² Chronic codependent