Blisters on the nose, if manifested as clustered blisters, blisters do not merge, blister wall rupture appeared vesicles accompanied by tingling, burning discomfort, consider herpes simplex due to herpes simplex virus infection, mostly due to contact with the infection, due to the herpes simplex virus infection, prone to recurring, when the body’s resistance is down, it is easy to recur. If the manifestation of erythema on the basis of thin-walled blisters, quickly become pustules, surrounded by a clear red halo, rupture, drying, crusts appear after the honey-yellow thick scabs, can be constantly fusion, expansion and itching, consider the possibility of impetigo, impetigo is due to hemolytic streptococcus or staphylococcus aureus infection and caused.