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This is Dr. David
at age 62, you could be having decline of your testosterone levels which can cause thin skinning of your penis.
you might need to eat more protein and vitamin C and collagen protein to help your skin heal.
would you like to upload a clear jpg photo of the dark spot on your penis? this cold be a benign mole or a hyperpigmented spot
here are instructions to upload a clear photo from a computer
type a word in the textbox and highlight it
then select the "chain" icon above the textbox or the paper clip icon to upload a jpg
this opens a window where you can click next to the text box to select the jpg or pdf file on your computer to upload into JustAnswer