Vaccination Query. With this problem?

My mother is 52 years  old lady. She used to face itching problem often. She doesn't have allergies in any foods. But suddenly she starts itching in hand palm, leg palm, underarm, at the end those itching places used to get red coloured. The itching doesn't stop until unless she takes any allergy medicine like cetzine, citiz etc. We don't have consult with any doctor till now. But my mom predicts that in the year 2010 she undergone uterus operation, that time from outside some fresh blood was given to her, according to her blood group. After that the problem started as per my mom. But now my query is I have heard that those having allergy problem not able to take COVID vaccine. So, in this case, Can my mom take COVID vaccine with this problem??? Please suggest.