Head oil long pimples is a common symptom, usually may be folliculitis or dandruff accumulation and other reasons. 1. Folliculitis: scalp too oily may be related to the daily diet, such as eating too much greasy things, or irregular work and rest often stay up late caused by the diet too oily or irregular work and rest will lead to the scalp follicles secretion of excessive oil, blocking the sebaceous gland ducts will cause folliculitis. 2. Dandruff accumulation: long time not wash your hair, dandruff is too much, resulting in the scalp secretion of oil and metabolites accumulate in the head, will also form pimples. Head oil long pimples recommended to go to the regular hospital dermatology diagnosis and treatment, follow the doctor’s instructions, pay attention to diet light, avoid spicy greasy stimulating food, maintain a regular work and rest, pay attention to the head of the local cleanliness and hygiene.