For the past 4 weeks I have experienced cracks at the corner(s) of my mouth and flaking skin around my lips. At the same time, my lips feel a little swollen, and the inside of my mouth is sensitive (burning sensation) to the toothpaste I have used for some time. I have tried lanolin, but the condition continues. I have recently started drinking kefir and komboucha. Do probiotics have an effect like this? I have no other health issues.