Is It Psoriasis of the Scalp

First I was having a scaly skin behind one ear.  It would shed and then become sore and raw.  My primary doctor
had given me a cream to use.  It worked, but I cannot remember the name of it.
Now I get these dry skin patches on my scalp, and they do not flake off like dandruff.  If I tend to scratch it, they get sore.  Is it psoriasis?  My doctor thought it was psoriasis behind the ear.

[Dr Santos]

Hi,

Scalp psoriasis  is characterized by thick silvery white scale on patches of very red skin. It may extend slightly beyond the hairline. It may not cause any symptoms at all or may be extremely itchy. It tends to be a chronic problem.  Other differentials include sebopsoriasis and pityriasis amiantacea. Scalp psoriasis requires slightly different regimes from psoriasis affecting the skin elsewhere.  Most treatments will need to be used regularly for several weeks before a benefit is seen. Have this evaluated further by your dermatologist for proper management. Direct clinical examination is important for proper diagnosis. A comparison with your previous condition may also be done.

Take care and keep us posted.