Skin, Hair and Nail Problems

Hello Doctors, 3 days back I noticed something in left hand as attached in pic I am not sure if this is an infection from some insects / caterpillars or its a burn problem due to exposure to fire I am feeling some pain when i leave my hand freely downwards ( like when i feel blood flow on the infected area i feel little pain ) . If i keep hand normal writing position i dont feel any pain

I have combination skin which face wash, toner moisturizer good for me? Can I use salicylic acid face wash??

I applied one ayurvedic hair oil and immediately after applying am having excess hair loss like 400 - 500 hairs per day usually I get hair fall like 10 to 15 strands How to recover from this damage And I have vitamin d deficiency 20, and iron also 20

At this age it's difficult to deal with receding hair line with dry and itchy scalp also severe hair fall it seems to be male pattern baldness [hairs are receding in M shape] What steps should i take to minimize the hair loss and tried eating DHT blockers for a month didn't worked... I tried with egg white shampoo even that didn't worked... I would be helpful if someone responds with proper answer...

I had very thick hair 7 years ago.. due to regular ponytail hairstyle I lost most of my hair.. I want to whether onions really help in growing my lost hair and make my hair thick.. also how to use this? How many months it will take to see visible results.. kindly help.. i bother about using other chemicals for hair..

I have this white spot near my jaw from 7 years. What could this be? Do I have to worry about this? Should I show to doc?

I have attached my face image where u can see a bump is grown near the nise from the last 1 month. Please tell me what it is? I don't think it is a pimple because it doesn't show any white acne.

Iron is 20 how much iron should I take per day and which medicine to take for iron deficiency How to improve

Dermatosis Papulosa Nigra on face & neck .. need a solution .............................................

Hello doctor, My wife skin have this type of patches, please     let me know the reason and treatment.