2 doctors weighed in:

What causes thick dandruff on scalp?

2 doctors weighed in
Dr. Martin Raff
Internal Medicine - Infectious Disease
1 doctor agrees

In brief: Several posibilities

A fungus, malassezia lives on scalps of healthy adults without problems, sometimes growing out of control, feeding on oils inyour hair follicles.
This can irritate your scalp and cause extra skin cells to grow, die and fall off, clumping with oil from your hair and scalp, making them appear white and flaky in your hair. You may also have eczema, psoriasis, dry skin, seborrheic dermatitis.

In brief: Several posibilities

A fungus, malassezia lives on scalps of healthy adults without problems, sometimes growing out of control, feeding on oils inyour hair follicles.
This can irritate your scalp and cause extra skin cells to grow, die and fall off, clumping with oil from your hair and scalp, making them appear white and flaky in your hair. You may also have eczema, psoriasis, dry skin, seborrheic dermatitis.
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