Talk to Internal Medicine on High Blood Pressure

My mother has been taking Co-Vmed 10/160/12.5mg for the past 4 years and her blood pressure has remained normal and now she doesn't need to take it every day. She skips it for a day and takes it, but with that, red spots start forming on her arms, and they are in a very small area. And along with that, she has been using Novoteph 40 mg for the past 1 year. And now I don't know which medicine is causing these reactions. And these red spots were first dark brown and then red and gradually faded away. Earlier, the reactions were only on one arm And now it happened on the other arm too. Apart from this, she has also tried taking Onato 5 mg and Tenormin 50 mg but it makes no difference at all.