A few rice grain size lymphatic growths on the foreskin under the glans are mainly considered to be related to eczema, circumcision and glansitis, allergic reactions, and sexually transmitted diseases. 1. Eczema: it can lead to the appearance of pinhead to rice grain size pimples on the glans and parts of the glans, accompanied by itching, tingling and other symptoms. 2. Gonorrhea: the clinical symptoms of this disease are varied, and some patients may have pimples the size of a grain of rice and be involved in itching and other uncomfortable symptoms. 3. Allergic reaction: after being stimulated by allergens, it can lead to itching, redness and swelling, as well as pimples or wind bumps and other symptoms in the affected area. 4. Sexually transmitted diseases (STDs): syphilis, warts, etc., may lead to the appearance of rice-sized bumps on the genital organs during the onset of the disease. If the above symptoms appear, you should go to the hospital in time to confirm the diagnosis and standardize the treatment under the guidance of the doctor.