Right after oral sex on a head the fine red eruption is shown, about...

[Andrey]

Right after oral sex on a head the fine red eruption is shown, passes or takes place by the morning or in the day, two. How much or As far as it is dangerous and how it is possible to avoid it or this?

[New settlers V.S.]

Oral sex - not the best way for self-affirmation, especially by way of hygiene (presence of a carious teeth, tonsils, nasopharynxes, etc.).