 [ Symptoms ] what could be causing an almost hivelike rash to appear on my daughter is skin when she comes in contact with cold liquid like having a cold bottle of water against her arm makes a raised bumpy rash appear where the bottle touched her or going swimming in a cold lake the bumps appeared all over her body [ Disease ] minocycline is a medication that is typically used to treat skin conditions like acne antibiotics should not be used to treat the common cold it will not have any benefit and due to the fact that we have been misusing antibiotics for things like the common cold we are running out of options for infections and very bad ones called superbugs