Is this an ADHD trait? Melissa please help!

I am not sure about this one,I have not read about this so I am lost, but could someone please tell me if their ADHD spouse ever celebrates a Birthday,Anniversary,Christmas,New years etc,My husband has done that to me where he never celebrates an occasion,and now his ex child's mother just email me saying that he never sends the child Christmas cards,birthday cards "nothing"could anyone please tell me if they have experienced this and what is the cause???

Thank you!