Seborrheic dermatitis

dear sir,kindly tell me the solution for my Seborrheic problem.i have lots of hair which started falling off from past 1 year,6 months back it became worse and i shaved off my hair.whaen new hair started growing that also started loosing along with that eyebrows also started falling.scales,white head king of things started forming on scalp and eyebrows.i consulted first dermatologist he gave desonide and ketaconazole shampoo i used it for 2 months no use.then i went to other doctor who gave salcylic acid,ketoconazole shampoo along with that isotretinoin tablets which caused my lots of my hair turn into white after taking 4 tablets.i stopped it.now i went to homeopath he gave me sulphur,keratin and a combination medicine for dandruff and stopping hair loss but no medicine to cure the desease.my condition is so bad now i lost lots of hair with a patch devoloped at center of scalp and hair line is going back.dandruf gets formed with in 4 hours after taking head bath with itching.i lost lots of eyebrows only few left which we can count scales of skin and white head kind of particles with itching and grease is present.grease and oil also prent on fore head beside eyes and on eye lids.hair is falling if breazze of air touches it.plz tell me the solution for my prblem i beg u.