Chemotherapy scalp rash, to clarify its cause, symptomatic treatment. It may be allergic, then you can use anti-allergic drugs, or it may be caused by the stimulation of chemotherapy drugs, then you can use symptomatic anti-itch, if it is caused by infection, then you need anti-infection treatment. 1. Allergy: Some patients are allergic and may irritate the local skin after using chemotherapy drugs. Scalp rash may occur when the scalp is stimulated, and the patient may also have the clinical manifestation of itching, then you can choose anti-allergic drugs such as dexamethasone, loratadine, and so on. 2. Chemotherapy drug stimulation, some chemotherapy drugs can cause bone marrow function inhibition, resulting in a decrease in the number of platelets, can also cause a rash on the scalp. At this time, patients may also have other clinical manifestations, such as skin erythema, hemoptysis, vomiting blood, etc., can be under the guidance of the doctor to choose the platelet-boosting drugs such as recombinant human thrombopoietin or intravenous platelet transfusion. 3. Infection: after chemotherapy patients may appear white blood cell levels drop, it is easy to appear infected, there will also be a rash on the scalp, you can choose the appropriate anti-inflammatory drugs such as penicillin, amoxicillin and so on. Chemotherapy scalp rash, under the guidance of the doctor, to clarify the specific causes of symptomatic treatment, to avoid serious consequences.