Option to specify an item that is not listed

[Will04]

Hi everyone,

I'm building a database that will allow me to enter medical information about patients. On the present form (paper) one of the question asks about the medical history of the patient with 7 available options( Diabetes, Cardiac, HIV etc). The 7th option is 'OTHER' and the patient is supposed to specify what Other refers to.

How can I translate this to an Access form?

I am thinking of a list of the 7 options, but when option 7 is selected; the user should be prompted to enter a specific disease.

QUESTION?
How can this be achieved, and how should the table be designed to accept this entry?


All help appreciated

Thanks

Will