Rim of penis is red after masterbation

Men's health
1

For a while now the rim of my penis gets extremely red after dry master bating with little dots that are smooth and I don’t know what it is. I haven’t had a partner in over 9 months so I don’t think it would be an std. help

2

May be best to use lube.

3

u should post a pic. must use desktop

4

here

5

Looks quite normal to me.