Good evening Valerio, in the meantime I suggest you check the blood pressure values ​​that are normal and also check the stress and anger as well as eat them abundantly. Often her problem occurs in the presence of migraines but she does not mention them so I guess they do not depend on it. I advise you to keep an eye on the conditions in which this dilation occurs in order to have more evaluation parameters. I’m sorry not to be able to give you a more exhaustive answer! Greetings