I suddenly have loads of small red bumps on my torso that arent itchy?

Doctor can evaluate: Bumps may be conditions such as eczema, comedones, folliculitis, various infections, allergic reactions, or irritant/chemical reactions. Allergic reactions usually itch. Each may have different treatment. A primary care doctor or dermatologist can examine it. Rashes are hard to describe in words. An in-person visit is best but a video consultation with high quality images may be adequate.