Itching on the chest in the 5th month of pregnancy is usually considered more likely to be eczema. In addition to itching, rashes such as erythema, papules and scratches can also appear. In clinical treatment, oral medication is usually not recommended, and safer topical medication can be applied, such as a cold wet compress of fresh Amaranthus, Phellodendron, Goldenseal, and forsythia in decoction, twice a day for 20 minutes, followed by a 1:1 mixture of boric acid zinc oxide ointment and black bean distillate ointment for treatment. During the treatment period, patients should pay attention to avoid eating shrimp, crab, scallops, sea cucumber and other seafood, as well as avoid spicy and irritating food.