Headache (Migraine)- Patho, Diagnosis, Symptoms Flashcards
Phases of a migraine
Premonitory phase, aura, headache pain phase, postdrome
Symptoms of the premonitory phase
Tiredness, mood changes, yawning, thirst, cravings, urinary frequency, light and sound sensitivity, cranial autonomic symptoms: conjunctival injection, tearing, rhinorrhea, flushing, sweating
Aura phase
Cortical spreading depression
Headache pain phase symptoms
Throbbing headache, N/V, light, sound, and smell sensitivity
How long does the premonitory phase last?
Hours to days before the onset of the migraine
How long does the headache pain phase last?
4-72 hours
Postdrome phase symptoms
Tiredness, difficulty concentrating
How long does the postdrome phase last?
Up to 48 hours after the migraine ends
Premonitory phase patho
Hypothalamus, brainstem, limbic system, cortical areas are triggered by alterations in homeostasis –> increased parasympathetic activity –> activates meningeal nociceptors
What affects nociceptive signals?
Cyclical brainstem activity
Headache pain phase patho: what neuropeptides are involved?
CGRP, PACAP-38
Headache pain phase patho
Trigeminovascular system activation, cortical spreading depression, sensitization, neuronal hyperexcitability
Migraine triggers
stress, hormone changes/menstruation, not eating, weather, sleep disturbance, perfume/odor, neck pain, bright lights, alcohol, smoke, sleeping late, heat, food, exercise, sexual activity
Diagnostic criteria for a migraine without aura
Headache attacks lasting 4-72 hours (when untreated or successfully treated)
Headache has at least 2/4 characteristics:
Unilateral location
Moderate or severe pain intensity
Aggravation by or causing avoidance or routine physical activity like walking or climbing up stairs
During headache, at least 1 of the following:
Nausea and/or vomiting
Photophobia and phonophobia
Diagnostic criteria for migraine WITH aura
≥1 of the following fully reversible aura symptoms
Visual, sensory, speech and/or language, motor, brainstem, retinal
At least 3/6 characteristics:
At least 1 aura symptom spreads gradually over ≥5 minutes
≥2 aura symptoms occurring in succession
Each individual aura symptom lasts 5-60 minutes
≥1 aura symptom is unilateral
≥1 aura symptom is positive
Aura is accompanied, or followed within 60 minutes, by headache