Small red dots with pain on the top of the glans may be related to allergy, glansitis, circumcision and other reasons. 1. Allergy: If the glans comes into contact with allergens, it may cause localized metamorphic reactions, resulting in the appearance of small red dots accompanied by painful symptoms. 2. Glansitis: If you suffer from glansitis, due to the stimulation of inflammation, small red spots on the glans may appear, accompanied by localized pain and other symptoms. 3. Prolonged foreskin: If the foreskin is prolonged, the glans can be stimulated by the foreskin scale for a long period of time, forming localized small red dots, which may be accompanied by painful symptoms. It is recommended to go to the regular hospital in time to have small red dots on the top of the glans and a little pain, to clarify the cause of the disease, and standardize the treatment under the guidance of the doctor.