Skin, Hair and Nail Problems

I attached 2 photos.plz examine them and tell me why that lines came on back side of thigh (above knee).Is it serious or normal?

Sir/mdam can i know about the side effects of minoxidil5% and these side effects will be permanent or go after stop usinh minoxidil5%

I had strechmark on 2019 on my stomach and it was happened all of a sudden, but in 2022 i almost had no strechmark because my skin was healing naturally but now i am having the same issues it's being covered my belly and side belly too I don't understand how this is happening overweight or something else i don't know yeah i got 4 kilo weight gain but also i have another question i have my friend and he also become 56 to 78 kilo obese but he did not had any 1 mark of strechmark mark how? Am i have a law level of testosterone or what can i do it's keeling by confidence level day by day it's looks too weird i don't wanna have this anymore what can i do?

I am 32 year old I have a bold black patches on my forehead, it starting in my 20's but I didn't care for it but it getting bigger now and my forehead is looking black. I think it's due to not applying sunscreen on my face. Please tell me creams for this patches

The back of my neck is constantly itching. It is flaky, red and hurts/stings. Most of the time the itching is so strong that I scratch myself with nails and then it bleeds. It happens in humid climate and due to sweat at that area. This is only at the end of my hairline at the back of my neck. Even if it dries and heals I scratch it again and then it starts all over again.

Can long hair cause hair loss in the front region of head?? I have hair above my hip so can tht cause hair loss in the front region of head due to pressure

Mundan is done on 5 July . He is 5 months old. After Mundan he has a pimple on head . What to apply ?

My head is soiling too much and headache and dandruff. some time too much itching in my head .because of itching in my head today i removed my hair totally.

I have hair which reaches just above the hip so having long hair can cause hair loss in the front region of head?? That is just above the forehead.. I being recommend by my friend to get my hair. Short because long hair causes frontal hair loss is it true?

Even after washing my hair it always feel very sticky, dry rough lots of tangled hairs split ends . I use conditioner also but nothing is working. I have dandruff scalp also for that I use 2% ketoconazole+zpto still nothing working. I have attached the picture also.