Itchy scalp and small particles, common causes of contact dermatitis, folliculitis, ringworm and other diseases, need to be based on the specific cause of the symptomatic treatment, including general treatment, drug treatment and other methods. 1. contact dermatitis: for example, the use of certain hair dyes, shampoos and other causes of contact dermatitis, can also lead to scalp itching with small particles. First of all, you need to clarify the causative factors and avoid re-exposure. Secondly, you can use compound dexamethasone ointment, hydrocortisone cream and other drugs, and take antihistamine drugs such as loratadine and chlorpheniramine. 2. Folliculitis: an inflammatory disease of the hair follicles due to inattention to scalp hygiene and bacterial infection. There will also be scalp itchy feeling with small particles. At this time you need to pay attention to scalp hygiene, topical mupirocin ointment, fusidic acid cream and other drugs. 3. ringworm: fungal infection caused by ringworm, may also cause scalp itching, and small particles. At this time you can use topical terbinafine cream, ketoconazole ointment and other antifungal drugs, the disease is longer, larger area, you can take itraconazole capsules, terbinafine tablets and other antifungal drugs. Itchy scalp and small particles, it is recommended to go to the hospital in time to check, clarify the cause of the disease and follow the doctor’s instructions for treatment. The drugs mentioned above should be used according to medical advice.