Why is my dandruff and grey hair worsening?

Some hair on the eyebrows falls out each day as part of the natural hair growth cycle, which involves transitions through the growth, resting, and slipping phases. Causes such as anxiety, nutrient deficiencies, uneven hormone levels, or too much plucking might cause hair to fall out excessively. In order to foster the development of healthy hair, consider eating a nutrient-rich diet, drinking water, and not using products that can harm your hair such as perming and coloring. If the hair vasculature starts to thin or you get areas, or the hair loss remains, it is best to see a medical professional. 

Psoriasis happens whe­n the skin turns red, with patches and itching. Scales on the­ skin look silvery. Not catching – you won't spread it. In kids, Psoriasis may come from stre­ss or family history. Manage Psoriasis by moisturizing skin with creams. Don't scratch skin. Use ge­ntle soap. Sometimes, doctors give­ special lotions for Psoriasis. 

There is no as such any best treatment for eczema, but a good moisturizer and keeping the skin away from the allergens will keep you away from eczema 

It seems like a case of fungal infection; a skin condition that may cause itching and redness on the lower part of the skin. It is caused by germs which thrive well in warm and moist areas. Keeping the skin dry and clean, using antifungal creams as well as putting on loose clothes can be helpful. To avoid further irritation, kindly refrain from scratching.