Have you considered that you may have bromine toxicity? Or perhaps some infection in your lymphatic system. Bromine is named after bromos which is greek for "stench" and is found in many foods and common chemicals.
I would say it is always an internal situation causing external manifestations.
Consider: fecal impactions, liver stones /congestion, parasites in your colon and liver, infections in various organs.
Recommended:
Healthy dietary changes
Progressive colon cleanse
Liver flushing parasite cleanse
Heavy metal chelation
Iodine supplementation