Ehhh ada lah, a few of us experienced that after vaccination, some kena gatal-gatal for a few days je, some lama sikit depending on body reaction. Most of us chill je, pakai loose cotton clothes, minum banyak water, and if gatal sangat boleh pakai mild moisturiser or cooling gel (like Aloe Vera) to ease it out. Tapi kalau ruam tu tak hilang after a week or getting worse, better check with your doctor just to be sure, sebab sometimes it's just normal immune response tapi ada rare cases kena monitor. Hope it settles soon!