You have become sensitive to salt - maybe from prescribed steroids, HRT or antidepressants, maybe as a result of eating salty food during pregnancy, maybe because of dieting...
Your skin has become thinner, and the colour - red/pink/purple/blue - is from the blood vessels beneath the surface... Have a look at my website http://www.wildeaboutsteroids.co.uk/.html (The site does not sell anything and has no banners or sponsors or adverts - just helpful information.)
Read my Mensa article on Obesity and the Salt Connection
Sodium in foods and
Associated health conditions
I can be contacted via my website if you need my further help. My help is free.