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Pages New Dacian's MedicineHeadache (Classical / Allopathic Medicine)

Headaches, which are the most common neurologic symptom, may be localized or generalized, producing mild to severe pain. About 90% of all headaches are benign and can be described as muscle-contraction, vascular, or a combination of both. Occasionally, however, headaches indicate a severe neurologic disorder associated with intracranial inflammation, increased intracranial pressure (ICP), or meningeal irritation. They may also result from ocular or sinus disorders or the effects of drugs, tests, or treatments.

Other causes of headaches include fever, eyestrain, dehydration, and systemic febrile illnesses. Headaches may occur with certain metabolic disturbances - such as hypoxemia, hypercapnia, hyperglycemia, or hypoglycemia - but they aren't diagnostic or prominent symptoms. Some individuals get headaches after seizures or from coughing, sneezing, heavy lifting, or stooping. (See Comparing benign headaches.)

HISTORY:
Ask the patient to describe the characteristics of the headache, including its location, recurrence, and duration. Does it wake him from sleep or recur at certain times of the day? Does anything alleviate or aggravate it?
Ask the patient if the headache is associated with neck pain.
Ask the patient about precipitating factors, such as certain foods, exposure to bright lights, stress, trouble sleeping, hunger, elation, or yawning.
Obtain a drug history, including prescription and over-the-counter drugs, herbal remedies, and recreational drugs. Also, ask the patient about alcohol intake.
Ask the patient about head trauma within the last 4 weeks and about nausea, vomiting, photophobia, or vision changes.
Determine if the patient feels drowsy, confused, or dizzy.
Ask the patient if he recently developed seizures or has a history of seizures.

Comparing benign headaches
Benign headaches, which comprise 90% of all headaches, may be classified as muscle-contraction (tension), vascular (migraine and cluster), or a combination of both. When caring for a patient with headaches, it's important to know the particular signs and symptoms of each type.

Characteristics:
Incidence
Muscle-contraction headaches:
Most common type, accounting for 80% of all headaches
Vascular headaches:
More common in women and those with a family history of migraines
Onset after puberty
 
Characteristics:
Precipitating factors
Muscle-contraction headaches:
Stress, anxiety, tension, improper posture, and body alignment
Prolonged muscle contraction without structural damage
Eye, ear, and paranasal sinus disorders that produce reflex muscle contractions 
Vascular headaches:
Hormone fluctuations
Alcohol
Emotional upset
Too little or too much sleep
Foods, such as chocolate, cheese, monosodium glutamate, and cured meats; caffeine withdrawal

Characteristics:
Intensity and duration
Muscle-contraction headaches:
Produce an aching tightness or a band of pain around the head, especially in the neck and in occipital and temporal areas
Occur frequently and usually last for several hours
Vascular headaches:
Weather changes such as shifts in barometric pressure
May begin with an awareness of an impending migraine or a 5- to 15-minute prodrome of neurologic deficits, such as vision disturbances, dizziness, unsteady gait, or tingling of the face, lips, or hands
Produce severe, constant, throbbing pain that's typically unilateral and may be incapacitating
Last for 4 to 6 hours

Characteristics:
Associated signs and symptoms
Muscle-contraction headaches:
Tense neck and facial muscles
Vascular headaches:
Anorexia, nausea, and vomiting
Occasionally, photophobia, sensitivity to loud noises, weakness, and fatigue
Depending on the type (cluster headache or classic, common, or hemiplegic migraine), possibly chills, depression, eye pain, ptosis, tearing, rhinorrhea, diaphoresis, and facial flushing

PHYSICAL ASSESSMENT:
Evaluate the patient's level of consciousness. Note signs of increased ICP - widened pulse pressure, bradycardia, altered respiratory pattern, and increased blood pressure.
Check pupil size and response to light, and note neck stiffness.

PEDIATRIC POINTERS:
In an infant, a shrill cry or bulging fontanels may indicate increased ICP and headache.
In children older than age 3, headache is the most common symptom of a brain tumor.

PATIENT COUNSELING:
Advise the patient to take an analgesic, darken the room, and minimize other stimuli when a headache occurs.


Bibliography:

1. Rapid Assessment, A Flowchart Guide to Evaluating Signs & Symptoms, Lippincott Williams & Wilkins, 2004.
2. Professional Guide to Signs and symptoms, Edition V, Lippincott Williams & Wilkins, 2007.
3. Guide to common symptoms, Edition V, McGraw - Hill, 2002.

Dorin, Merticaru (2010)