Salty skin

I have just noticed in the past week and a half that my lips taste very salty and inside my mouth does too. If I touch my tongue to my arm (or hand,leg, etc...)--it also tastes salty. My lips seem to be the strongest area and they stay that way after showering and all day--24/7 actually. I am 45 years old and cannot find a reason for this. I have been drinking alot more water this week but I am still salty. I have normal blood pressure and am normal weight & normal diet. Any suggestions?