Though researchers are still uncertain about what causes seborrheic dermatitis, the condition may develop due to the yeast that naturally resides on skin, to weather conditions and/or to stress.
Some recommend patients alternate each day using either a zinc pyrithione shampoo or a selenium sulfide shampoo. (Both antidandruff shampoos are available over-the-counter.)
Rotating between the two may be a better way to keep the yeast on your scalp from overgrowing, she says.
To treat related facial symptoms, a dermatologist or primary care doctor may recommend a topical antifungal or topical steroid to alleviate rashes.
#2: It Could Be Skin Cancer
Dandruff is flakiness that happens all over the scalp, while flakiness in a targeted area may be a sign of something more.
So, if a patient has a new quarter-size area on her scalp that always flakes, Farah may consider skin cancer as a cause.
Other signs may include that the spot won’t heal, bleeds or is painful.
As you age and your hair thins at the crown, you’re at an increased risk for skin cancer in this area. If you see something while doing your hair, it’s important to bring it up with your doctor.