White matter and other changes around the toenails and fingernails can occur with psoriasis or nail fungus. However, fungal infections are contagious, and psoriasis is not. The causes and ...

So there are things anywhere from a fungus on the scalp, to true psoriasis on the scalp, to eczema or an allergic reaction. So if your dandruff is not improving, that's the time to seek the care ...