Is severe itchiness a vaccine related symptom

Mother of my child and her niece are both experiencing extreme itchiness. My ex is a healthy, fit 34 year old woman who had no reason to get the vaxx and I’m shocked she and her husband decided to. Her niece is 6 years old and had no reason to get the vaxx as she already had Covid. Both are now experiencing constant itchiness and for the little one it’s become an actual problem impacting her throughout the day, everyday. My daughter(7) is currently not vaxxed and I’d hate my ex forever if she stupidly allows her to be. My child is completely healthy, very active and eats healthy, at least at my home. How can smart people be so dumb. They aren’t even dumb progressives, but republicans. How could any republican be dumb enough to trust this gov’t and the CDC - I don’t know.