“It started exactly that day.” Unlike many patients with chronic headaches who cannot recall the onset, some headaches begin on a specific, memorable day and persist uninterrupted from that first day onward—dates the patient could mark on a calendar. This is the form that the International Classification of Headache Disorders, 3rd Edition (ICHD-3), refers to as New Daily Persistent Headache (NDPH, ICHD-3 4.10). This article reviews the diagnostic criteria for NDPH, the secondary causes that must be ruled out, and treatment and self-management approaches tailored to the clinical presentation.
Medical Background — The Characteristic Feature of “Daily from the Start”
The key to NDPH is not pain intensity but its course. Unlike migraine or tension-type headache, which become chronic through a pattern of “occasional pain gradually increasing in frequency,” NDPH persists essentially daily and continuously from the moment of onset. The pain quality itself is nonspecific—it may feel like bilateral pressure as in tension-type headache, or it may be pulsating with light and sound sensitivity as in migraine. In other words, “when and how it started” rather than “how it hurts” is the key to diagnosis (Goadsby et al., ICHD-3, Cephalalgia 2018).
The triggering context is also characteristic. Many patients report disease onset following a viral infection (upper respiratory infection or fever), post-surgical procedure, or a major stressful event. Post-infection neuroinflammation, cytokine activation (such as TNF-α), and cervical hypermobility have been proposed as hypotheses, but a single established cause has not yet been identified. The course splits into two major patterns: self-limiting, with spontaneous improvement within months, and refractory, with poor response to various treatments. The latter is considered one of the most challenging types in headache clinics.
Diagnosis and Differential Diagnosis — NDPH is a “Diagnosis of Exclusion”
The diagnostic criteria for ICHD-3 4.10 are as follows:
A. Persistent headache meeting criteria B and C
B. Clearly and distinctly remembered onset, establishing as continuous and non-remitting within 24 hours
C. Persisting for more than 3 months
D. Not better explained by another ICHD-3 diagnosis
The most important point is criterion D—NDPH is a diagnosis made only after excluding all other causes. The phrase “new daily persistent headache” can sound identical to several dangerous secondary headaches. Representative conditions that must be differentiated in clinical practice include:
Spontaneous Intracranial Hypotension (SIH, cerebrospinal fluid leak) — Orthostatic pattern worsening when upright and improving when lying down
Idiopathic Intracranial Hypertension (IIH) — Worsening when lying down, pulsatile tinnitus, transient visual obscurations, papilledema
Cerebral Venous Sinus Thrombosis (CVST) — Increased risk in postpartum period, oral contraceptive use, and thrombotic tendencies
Giant Cell Arteritis — New headache in patients over 50, jaw claudication, temporal artery tenderness, elevated ESR/CRP
Post-traumatic Headache and Medication Overuse Headache (MOH) — History of head trauma, frequent analgesic use
Therefore, the standard approach to newly onset daily headache typically includes brain MRI along with MR venography (MRV), measurement of opening pressure by lumbar puncture if necessary, and confirmation of blood tests (ESR, CRP, etc.). Only when this evaluation is normal and the above criteria are met is the diagnosis of NDPH established.
Self-Management and Prevention — Approaching According to Phenotype
What follows can be implemented directly outside the clinic. Accepting that NDPH is not a condition cured by “one miracle drug” but rather a disease requiring consistent management tailored to the headache phenotype (migraine-type or tension-type) lightens the burden considerably.
Record the onset date and character of your headache. The exact date the headache began, whether infection, surgery, or a stressful event was present at that time—these are very important clues for diagnosis and prognosis prediction. In your headache diary, also note the intensity, associated symptoms, and medications taken.
Avoid analgesic overuse. Because pain is present daily, it is easy to take analgesics daily as well, but this creates a more difficult-to-treat situation complicated by medication overuse headache. The principle is to limit simple analgesics to fewer than 15 days per month and triptans or combination analgesics to fewer than 10 days per month.
Stabilize your daily rhythm. Regular sleep and wake times, adequate hydration, moderation of excessive caffeine, and not skipping meals help lower the baseline level of pain.
Address neck and shoulder tension alongside stress. Correction of prolonged screen time posture, light aerobic exercise, breathing and relaxation training, and if necessary, cognitive behavioral therapy are recommended as adjunctive approaches.
Preventive pharmacotherapy follows the phenotype. For migraine-type presentation, migraine preventive medications such as amitriptyline, topiramate, or CGRP-targeted therapy are considered first; for tension-type, tricyclic antidepressants are prioritized. In some patients, nerve blocks and doxycycline or steroid trials based on the post-infection neuroinflammation hypothesis have been reported, but the evidence level remains limited. Always discuss with your attending physician which medication to use and in what dosage.
Seek immediate medical attention if you experience these warning signs:
“Thunderclap” headache reaching maximum intensity within 1 minute
Fever with neck stiffness or altered consciousness
Unilateral arm or leg weakness, speech disturbance, diplopia, or visual field defect and other neurological symptoms
Sudden worsening upon standing (suspect SIH) or worsening when lying down with pulsatile tinnitus (suspect IIH)
Headache beginning for the first time after age 50, weight loss, history of cancer or immunocompromise
New headache during pregnancy or immediately postpartum
Conclusion
NDPH is “a headache whose onset day is remembered.” That memory is a source of anxiety, but it is simultaneously the strongest clue to diagnosis and treatment. If a headache begins one day and persists daily without stopping, rather than managing it alone with analgesics, the fastest path to recovery is to first exclude dangerous causes through proper imaging studies and then begin preventive treatment matched to the clinical phenotype. Please record the onset date and associated symptoms and visit a headache clinic.