The wound clinic nurse told me that I am quite a person not good with communication.

I agree, and perhaps from the following points may illustrate

1) Authority style - Posting questions intending to show knowledge on the matter

2) Passive Response - Does not actively affirm that the message is received

3) Withdrawal - I was on meds and drowsy last time, really didn't know what they were talking about.

Well, it is kinda bad but I guess that also leaves a lot to be desired. Keep on the effort.