hi welcome to HCM
hi i had gone through your query and understand your concerns. i would come up with two most possibilities to fit your condition .these include
1.the first one may be,tinea
capitis;wood's lamp shows fluorescence,and potassium hydroxide preparation shows fungus.
2.second possibility is,Alopecia
areata;autoimmune mechanism caused by chemiclas,drugs,and infections.
i advise you taking Homeopathic
medicines gives safe and permanent cure for your complaints
consult your local homeopathic physician for correct diagnosis of the case and remedy to fit your complaints
I hope this is helpful for you, thank you