The causes of pain in the right foot without redness or swelling may be related to strain, developmental deformity, vascular disease and so on. 1. Strain injury: due to prolonged walking and overwork, the local muscle ligaments or fascia are repeatedly stretched, which will lead to obvious pain. 2. Developmental deformities: such as congenital high arches can also cause pain in the right foot, which requires timely corrective treatment. 3. Vascular disease: If you suffer from varicose veins in the lower limbs, it can cause poor blood circulation in the right foot, which may cause pain without redness or swelling. It is recommended to go to the regular hospital in time to clarify the cause of the right foot pain, and standardize the treatment under the guidance of the doctor.