Ongoing crusty flaking of skin top forehead/under hairline and outsides of both ears near sideburns. Sometimes red.

Seborrhea. Sounds like you have a condition called Seborrheic Dermatitis. This typically characterized by scaly, flaky and irritated skin on the scalp, brows, around ears and nose. Treatment often consists of dandruff shampoos, topical antifungals and/or corticosteroid lotions. Best to see your PCP or Derm for accurate diagnosis and treatment. .