The head is always drowsy and feels sleepy. The first thing to consider is the following: first, to clarify whether there is poor rest. If there is poor rest, you can take appropriate drugs to help sleep. Secondly, it is necessary to clarify whether there are emotional changes. Third, it is recommended that a CT examination of the neck be conducted to see if there is insufficient blood supply caused by cervical spondylosis compressing the carotid artery. Usually play less cell phones and computers, move your neck more, eat a light diet and eat more vegetables and fruits. If the above measures are not effective, CT brain examination can be done to see if it is caused by insufficient blood supply to the brain. Neurasthenia, sometimes, can also cause dizziness and feeling very sleepy. It is recommended to take drugs such as glutamine and vitamin B1. Sometimes anemia can also cause dizziness and drowsiness. You can go to the hospital for blood tests to see if there is any anemia, or you can apply appropriate Chinese medicine to replenish your qi and take proper rest. All of the above causes can cause dizziness and drowsiness, so it is recommended to go to the hospital for systematic examination.