Rashes appear and disappear

[Mark]

Hello!
On a body in different places there are rashes in the form of imperceptible, but firm to the touch bugorochkov (kak-as if pores outside), on the area up to 22 see are not scratched! Rashes 2 3 simultaneously, each of which keeps till some months, then disappears and there are others. On what is it similar?

[dr. Agapov]

Unfortunately on the resulted or brought signs in absentia to diagnose it is impossible (many variants) .v the moment of presence of rashes are necessary to address to the dermatologist.