Picking out yellow particles on the scalp is usually a symptom of seborrheic dermatitis, tinea capitis, bacterial infection, and it is recommended to go to the hospital to clarify the cause. 1. The cause of seborrheic dermatitis is not completely clear, is the scalp sebum secretion, breeding Malassezia, furfur spores and other microorganisms caused by. And heredity, long stay up late, drinking alcohol, love to eat spicy and stimulating food has a relationship. As the scalp sebum secretion is more, sebum condensation is easy to form particles. 2. Ringworm is caused by fungal infection, which is transmitted through skin-to-skin contact and can also be transmitted indirectly through towels, hats and other items. The metabolites produced by the fungus stimulate the scalp to ooze easily, and the ooze will form particles after coagulation. 3. Scalp bacterial infection is mostly seen after scalp trauma, the scalp is infected by bacteria is prone to pus and produce purulent secretions, secretions can be picked out after the scabs of particles. Scalp bacterial infection in addition to trauma, but also with the patient’s own low immune function, barrier function is not good. Picking out yellow particles on the scalp may have other reasons, it is recommended to go to the hospital in a timely manner, a clear diagnosis of symptomatic treatment, do not blindly deal with.