Does Sebhoric dermatitis is a early symptoms of androgenic alopecia?

no , there is no realion betweem SD and AGA but most of my patients coming to my clİnic also complain abaout seborreic dermatitis beside hair loss and they assume that oily skin causes hair loss with that misconseption . 

Seborrhea dermatitis is an inherited scalp and skin condition. It may accompany androgenic alopecia but it is not related to it. However, it it does often cause hair loss if not treated properly with anti-dandruff shampoo and an occasional steroid cream for acute exacerbation.

Seborrheic dermatitis can occur in babies as well as adults. So it is not an early sign. However, seborrheic dermatitis does frequently occur in patients with androgenetic hair loss and is important to address. Seborrheic dermatitis can induce a mild effluvium which might facilitate miniaturization over the long run. Aggressive treatment in my opinion is important.

Sebhoric dermatitis is not related to hair loss contrary to what most 'old wives tales' say.  Genetic hair loss is independent of Seborrhea dermatitis