Skin, Hair and Nail Problems

I have attached the photo.its black over the neck of my 4 year old daughter..how to get even tone over neck area too

Dear doctor I'm facing so much hair fall all of sudden , i'm using mama earth onion shampoo , looks like not working , can any one suggest good shampoo an conditioner for hair fall pls .Thank you

I used kojimed ultra during night,but since I work in night shift,I sleep from 2am to 10 am or maybe 3am to 11 am or worst 4:00 am to 12noon like that,I apply kojimed ultra before going to bed and I sleep next to a window which has mesh,and strong window glass,and I cover it with a bedsheet not any drapes,but some indirect sunlight come through it but not too much,will it affect my skin that time which can cause tanning? But after that when I wake up I use sunscreen anyway and go out

Dear Doctor's, My father is getting skin rashes randomly on body sometimes which are bit itchy and seems reddish. I have attached photograph. He was not having any allergy. This sometimes comes and goes on its own. Can you please guide on what's the exact issue? Thanks in advance.

I have been diagnosed with sensitive scalp, and my dermatologist has recommended me to use Keraglo lotion to cure dandruff and sensitive scalp, and he has asked me to use any mild shampoo, but I don't know which one to use, can any doctor please suggest me which shampoo is mild for sensitive scalp and would not strip off excess oil and not make my hair frizzy or over dry?

Have consulted doctor Ashalatha, as per prescribed medicines m using it, but pimples are agrabated like anything, unable to bear it.

I have lumps in my hand. Some lumps are inside the skin like fat lumps. I have lost my appetite. I lost 2 kg. I had this problem for  3 years but it used to get cured its own  but it has been more than a few days now. I am diabetic. The attached photo funsi has no puSs

I am facing pimple and acne problem sinces 3 months Is due to ciggerate?? I started 5 month before??

Sir on wearing a tight helmet ,skin close to eyes stretched forcily that it caused burning like sensation and irritation in skin so my query is would it have caused permanent stretching of skin or any permanent damage??

I am using dermaroller. Do I have to use life time and does it really help with hair regrow and eyebrows as well if yes than when can I expected to see results