Some of the hair at the top of the head is normal, some is not normal, need to be analyzed according to the specific situation. 1. Normal situation: the hair at the top of the head is only relatively sparse, and the area is small, the color and texture of the hair are not obvious abnormalities, which is a normal performance. 2. Abnormal situation: If the hair at the top of the head is seriously scarce, only a few hairs or even no hair at all, it suggests that the phenomenon of alopecia is present at the top of the head. Head spinning hair less and yellow color, fine texture or greasy hair, suggesting that androgenetic alopecia, ringworm, etc.. In addition, if there is little hair at the top of the head, and the local skin has obvious scaly adherence or inflammatory papules, you may suffer from psoriasis, folliculitis and other diseases. If it affects the aesthetic appearance, it is recommended to go to the hospital in a timely manner, after clarifying the cause of the disease, under the guidance of the doctor for treatment.