Very strange. Do you typically drink a lot of water during the day?

My other used to put a little olive or mustard oil on my umbilical when I was a kid. She says this helps fight out dryness of skin and throat. It works.

it's probably the quality of water you drink. Did you try adding some minerals to the water or gray/pink salt? I also concern some time and always bothered and concerned of drinking bottled ans/or tap water... I started looking at what bottled water contained and tried to avoid those with fluoride, also did a test of the local tap water, until I finally installed a water system to purify it.

you need minerals you lost during an intense dry period or a lot of effort.
Try to drink some Aquarius

Might be vitamin B deficiency. You can try drinking coconut water and honey water.