There are various clinical classifications of headache, and most of them appear at the same time with dizziness, so history taking and physical examination are especially important for the diagnosis and treatment of headache. Instrumental examinations are sometimes very important and necessary, but the purpose of instrumental examinations should be mainly to confirm the doctor’s general judgment of the disease or to exclude the possibility of a disease, rather than to write a large list of tests like a big net. For the very common migraine, partial vascular headache, neurological headache due to scalp neuritis, general cerebral blood supply deficiency, other functional headache, low cranial pressure headache, functional dizziness, head sinking, memory loss, shoulder and neck pain and sinking, etc., head and neck CT and MRI can not detect any abnormality at all, even if a star point of demyelination and cavernous ischemic point in the brain or mild posterior protrusion of intervertebral disc in the cervical spine is detected (in normal Even if stellate demyelination and interstitial ischemic spots in the brain or mild posterior disc protrusion in the cervical spine (present in >50% of the normal population) are detected, the association with these symptoms is generally low or simply irrelevant. However, for some new headaches, especially those with progressive worsening and other neurological symptoms and signs, it is better to first have a head scan to rule out intracranial organic pathology. I often see patients with atypical symptoms and not very severe headaches in the clinic, but the result is a huge intracranial tumor. In conclusion, doctors should refer to the results of various tests done previously and consider them carefully before prescribing the tests, instead of casting a wide net or doing it randomly or in order to reduce the ratio of medicine. The headache in one part of the scalp due to neuritis (after wind and cold) as mentioned above is very common (it is one of the neuropathic headaches, but unfortunately, the “headache guide” is only one sentence, without any practical guidance on clinical operation). Usually, as long as the patient has a history of wind chill, no fever and no neck straightness during physical examination, and the face-to-face doctor uses a small needle to check the local scalp for abnormalities (compared with the opposite side), the problem can be detected and confirmed (of course, other diseases have to be ruled out at the same time), the value of this insignificant examination is far from expensive CT or MRI. Therefore, I call it “1 cent is worth more than 1000 yuan”. What makes this value formula valid is the discernment of a few doctors and their clinical experience in the real world of subtlety. But in most cases, these small but crucial information are easily ignored by the clinicians. Their common treatment: it is easy to prescribe head CT or MRI when you happen to see headache and dizziness. Also easy to diagnose as vascular headache, vascular neurological headache, cerebral blood supply deficiency, etc. Local headache caused by scalp neuritis often occurs in the cold winter when the wind and cold are easy to attack, in the early spring when it is cold at first, in the summer when the temperature of indoor air conditioning is low, in the window when the wind blows, and when the hair goes out before it is dry after washing it. This kind of headache may be accompanied by dizziness. It can be improved by simple and effective treatment.