You are suffering from seborrheic dermatitis.. Medicine available for good improvement......As the treatment varies depending on the severity... Send photos of the affected area, for accurate diagnosis and treatment.

you need to get your scalp properly examined to know whether the excessive flaking is because of seborrheic dermatitis or an inflammatory condition like psoriasis. Kindly do not delay the treatment and get a consultation done with a qualified dermatologist. ...... hair fall problem post pregnancy is common and I can recommend shampoo and lotion that you can use for getting in under control. . You should send me images through private online consult for a better assessment of the problem and approaching it accordingly. Hope this is helpful.