I have 2 spots on my glans corona area that I can't imagine what might be?

2 spots on my corona or ridge of my glans. One is more reddish and the other is a little more whitish-purplish. They appear to be under the skin and aren't raised although one is very so slightly elevated. They appear to be permanent - been there for years. Circumcised I'm wondering if this can be scar tissue from excessive masturbation at younger ages - it appears that my thumb (I use the left hand) contacts the two spots and I rarely used lubricant. No pain, no itching, no discharge, flat.

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