My question involves malpractice in the state of: CA

I have an appointment with a healthcare professional next week.

They want me to fill out a medical history questionnaire as a new patient.

If I leave out a medical condition that I was diagnosed with almost a decade ago, can I get into legal trouble if they find out later?

Why? I want to leave out a particular medical condition that due to the way I have handled it almost always causes distraction to the appointment because they just go off about it and make me feel bad. It's emotionally draining. I have an aversion to see healthcare professionals because of the anticipated response, but I really want to go to this appointment and not have to worry about their judgment on this matter. The appointment is not about the medical condition.

I just don't want to be sued or something. I don't think it's possible, but I want to check here just in case.