Looks mostly like cherry hemangiomas.
Cherry Hemangioma is a small bright red dome-shaped bump on the skin. It ranges between 0.5 - 6 mm in diameter and usually several are present, typically on the chest increasing in number with age, mostly after 30 years. They are harmless, and nothing to worry. Your itching is mostly psychological or unrelated to it.
If itching is severe, it can be atopic dermatitis.
But can be treated with proper prescription of medicines.
Next Steps
consult or chat with me online for further help
Health Tips
do not worry much about it.