Itchy skin on the neck can be considered the following diseases: the first disease is pruritus, in addition to itching can also see scratch marks, blood crust such as rash performance, you can take oral levocetirizine hydrochloride capsules, external use of furnace glycolic lotion twice a day to apply treatment. If the breakout occurs due to scratching, you can also apply topical mupirocin ointment twice a day. In the second case, allergic dermatitis is considered. In addition to itching, a polymorphic rash like erythema, papules and papules can be seen, with a symmetrical distribution and unclear boundaries. It can be treated with oral loratadine hydrochloride tablets and topical application of fluticasone propionate ointment. In the third case, tinea corporis is considered, and flaky erythematous patches with slightly elevated edges and fine scales can be seen. A positive fungal microscopic test can be performed and can be treated by applying naftifine ketoconazole ointment twice a day.