Without Dr's advice you can't tell whether it is deficiency or any infection...

Better try atleast call to your Paediatrician and check once...

For babies and toddlers conditioner is not required...

And any baby brand shampoo you can use...other than high chemicals products...

Check once with the Dr...

Hi can you send image of it?

Before going to bed make a habbit of doing shushu at night and at night not to give him plenty of water give that much as his body required. It's psychology so you can deal it psychological. Thank you

Hi apply rash free ointment on the rashes and keep the area diaper free for few hours in a day and keep the area dry and clean as possible

Hi give small feed frequently and take burp after every small feed and let your baby lie down on left lateral position to minimize the spitting after feed

Hi apply cetaphil moisturizer on it

Initially babies will cry...

Use baby toothbrush with soft bristles...
And use baby tooth paste which is flouride free ...

Show him when you are doing brushing,tell him about brushing teeth...tell some story about brushing teeth... gradually he will allow you...

I am using Meemee strawberry flavoured toothpaste 2 years...it is good, flouride free, improves colour of the teeth also...

Hi use mosquito squatters and nets to prevent mosquito bites