Dermatitis on both sides of the nose requires laboratory tests for mites to see if there is a mite infection. If positive for mites, oral metronidazole tablets and topical clindamycin metronidazole applicator can be used, along with a fungal laboratory test. If spores of the fungus are detected, topical naftifine ketoconazole ointment or bifonazole ointment can be applied. For oral medications, fexofenadine hydrochloride tablets or avastin capsules can be chosen in combination with compound glycyrrhizin capsules. If the rash is dry, you can take oral moisturizing and anti-itching capsule in order to nourish blood, dispel wind, moisturize dryness and stop itching. If the color of the rash is bright red, oral Psoriasis Tartar Fever capsule or Yicheng capsule can be taken to clear heat and detoxify the toxin.