Have tiny red bumps directly underneath the head of my penis. they tend to itch occasionally. what could this be?

Here are some...: To verify if what you've observed in glans penis is related with tight long foreskin, see urologist timely so to reach right Dx for right care; if not related with foreskin or not pearly penile papules along penile corona, circumcision is needed for long-term care, but currently, improve topical hygiene with adequate cleansing & drying + judicious use of topical ant-fungal - steroid cream.