Itchy red scalp thinning hair without even scratching ?

hey guys my scalp has became a mess it is constantly greasy no matter how much i wash it and some places it is thinning.

at the places it is thinning there is sometimes an itch (which i never scratch no matter what) and if i look closely it red looking (not a bump or lump, just flat and red and no scaling) and the hairs all look thinner in that area

im currently using a tea trea shampoo and nizoral what can be causing it and will it eventually thicken as its been over a year in some of the patches

thansk for any help

Itchy red scalp thinning hair without even scratching ?

It sounds like eczema but without actually seeing it I can only guess. It's most likely that the oiliness is more responsible for the thinning that the red patches, although, eczema, psoriasis, dandruff, etc., will cause a bit of hair loss even if you don't scratch. It wouldn't be a bad idea for you to see a dermatologist. It's not the kind of thing that's going to go away on its own. Use a shampoo and conditioner for oily hair and don't wash your hair in hot water. The cooler the better for oily scalp.