Why do boys have so little hair on the back of their heads?

The lack of hair on the back of boys' heads may be caused by long-term malnutrition, seborrheic alopecia, genetics and other factors.

If the patient is malnourished for a long time, the nutrition of the hair may not meet the requirements for growth, which may cause the hair to grow slowly, or cause hair loss, resulting in less hair on the back of the head. In normal times, we must strengthen nutrition and achieve a combination of meat and vegetables to avoid long-term picky eaters and partial eclipses.

When patients experience seborrheic alopecia, it may cause hair loss on the scalp. Generally, they need to go to a dermatology department for a timely examination. They can apply erythromycin ointment, fusidic acid cream, tacrolimus ointment, etc. under the guidance of a doctor.

When a patient is affected by genetic factors, it will also lead to less hair on the back of the head. If it affects the appearance, hair transplant surgery can be used.

In addition to the above common causes, it cannot be ruled out that it is caused by disorders of hormone levels in the body. Symptomatic treatment is required according to the cause.