The causes of lower extremity penile enlargement include trauma, glansitis, hypoproteinemia, etc. The treatments include medications such as antibiotics, surgical treatments and so on. 1. Trauma: Penile enlargement can be caused by external shock to the penis, incarceration of the foreskin, soft tissue contusion, post-circumcision and other factors. 2. glans inflammation: glans inflammation refers to the inflammation of the head of the penis or foreskin caused by microorganisms and other factors, the glans mucous membrane is damaged and other factors can lead to penile edema, erythema, urinary frequency and painful urination and other symptoms. 3. Hypoproteinemia: the diagnostic standard of hypoproteinemia is blood albumin <30g/L. When protein intake is insufficient or protein synthesis is impaired, lower limb edema, malnutrition and other symptoms may occur. To summarize, when the patient is not feeling well, he should go to the hospital immediately.