Aww, nakaka-alala talaga yan lalo na pang-hapon pa, anak ko rin ganyan dati! A few of us moms noticed it's usually heat-related or humidity, especially since sobrang init natin dito, kaya try muna cooling measures like lightweight cotton clothes, frequent baths with cool water, at good airflow sa bahay, pero kung persistent pa rin or may iba pang signs like fever or parang infected na, best to check with pedia para ma-rule out kung may underlying cause na need attention talaga.