Why the arteries on the sides of my forehead swell and throb on exposure to sun or after a great stress?

Hi doctor,

I am in the third decade of my life and I have normal body weight. I suffer from epilepsy and I take the tablets Zonisamide and Lacosamide. Other than that, I believe I am in good health, except for mild leukopenia and neutropenia. In some situations, the arteries on the sides of my forehead swell a lot and throb. Thus, becoming very noticeable and unsightly. This happens when I feel very hot (when I stay in the sun on my face for a long time), but also after a workout or great stress. What could that be? What kind of specialist should I consult for further inquiry? Thank you.

Hi doctor,

Please find the attached documents, some pictures (arteries had just begun to contract), and an overview of my blood tests over the last few years. Also, note that I have been following a ketogenic diet for a couple of weeks (in order to better control seizures). My thyroid levels are fine. Epilepsy is caused by periventricular nodular heterotopia. There is no fixed drug eruption or dry skin. I have a daily skincare routine. I had used the tablet Oxcarbazepin for five years around seven to eight years back. Thank you very much.