Seborrheic dermatitis commonly occurs in the head, face, chest, back, and other areas with excessive sebum secretion in adults, and it can also affect infants and young children. It is necessary to enhance skin cleanliness and provide symptomatic treatment such as anti-inflammatory measures and regulation of lipid metabolism. Focus on skin cleanliness, eat more green vegetables and coarse fibers, and provide anti-inflammatory treatments such as oral tanshinone IIA sulfonate capsules, vitamin B6 tablets, doxycycline hydrochloride capsules, clarithromycin sustained-release tablets, and total paeony glycoside capsules. For the affected skin areas, apply topical remedies like Curcuma comosa clearing ointment, compound indomethacin tincture, etc. Products such as selenium disulfide cleanser or ketoconazole shampoo can be used to wash the scalp and as a body wash. Regularly enhance skin cleanliness and frequently change underwear.