When a piece of hair is suddenly missing on your head, you need to carefully observe the shape of the surface of this piece of skin with less hair. If the skin shows an oily shiny color and there are no self-conscious symptoms, there is a possibility that it is spot baldness. This condition is directly related to poor rest, lack of sleep, and high mental stress. If treatment is not carried out urgently, the area of hair loss may expand further and eventually become total head hair loss. If the missing piece of hair on your head is in an area where you tug your hair frequently, it may be triggered by hair pulling addiction. It is recommended to stop tugging hair and massage the scalp area with your hands regularly to promote blood circulation. Fungal infections in the scalp area can also cause localized patches of hair to fall out, and the hair can be accompanied by intense itching of the scalp. Some specific head tumors also tend to cause patchy hair loss.