rosacea
"I have a new lease on life now that I'm able to show my face without being painfully self-conscious.  For decades I was afflicted with hideous eruptions on my nose.  They were either big zits or small boils.  My nose is permanently scarred.  The doc said it was Rosacea and prescribed "doxy."  Follow the instructions carefully.  Don't lie down after you take it.  Drink plenty of water.  Don't eat for at least an hour.  Don't take calcium supplements for 2-3 hours.  I've had no obvious side effects.  Being fair-skinned, I've always been sensitive to the sun, so the sun-sensitivity side effect is nothing unusual."