You will need a detailed evaluation-
1. History - recent or since childhood; effect on sexual function
2. Examination- to determine if it is buried penis (as it happens in obese individuals) or reduction in hormone levels (as in hypogonadism); will need assessment of stretched penile length
3. Hormonal assays
Further management depends on the underlying cause identified during the evaluation.
Next Steps
Consult urologist for further evaluation.
Health Tips
About the use of fillers - kindly discuss the pros and cons of the same with experienced urologists/andrologists or plastic surgeons along with careful counseling, as long-term outcome data are limited compared with other cosmetic procedures.