My wife has shingles right now. It broke out in a few patches on her neck. No pain to speak of unless its touched. It did cause indigestion . I got the shingles vaccine after she was diagnosed. Like the COVID vaccine, I had flu like symptome the next day
it was all I ever used as a teen,as there was nothing else excepting straight razors. When double edge came out around 1973 I threw the double edge away and never looked back. Nowadays. after scraping my face all my life, I`ve given up shaving