Patches are usually red and flaky with silvery scales.

Your son's rash sounds much more like psoriasis, which can affect any part of the skin, causing circular red patches with thick, flaky, silvery scales.

Tarpons possess distinctive lateral lines and have shiny, silvery scales that cover most of their bodies, excluding the head.

The leaves are palmately compound, with five or seven leaflets, each leaflet 618 cm long, green with silvery scales both above and below.

The fruits are ovoid drupes 912 mm long, also covered in silvery scales.