Headache

About headaches

Headache is one of the most common health-related conditions in Australia, with around 15% of us taking pain-relieving

medication

for a headache at any given time.

It is likely that nearly all of us will experience headache during our lifetime. People of any age can be affected, but people between the ages of 25 and 44 years are more likely to report having a headache.

There are different types of headache and many different causes, which explains why the condition is so common. Most headaches have more than one contributing factor. Some of the more common triggers for headache are lifestyle related, such as poor

diet

stress

muscle tension

, and lack of

exercise

Serious underlying disorders, such as

brain tumours

, are rarely the cause of headache, although persistent headache should always be investigated by a

doctor

Headache can be classified into 2 broad categories: primary and secondary. Examples of primary headache include cluster and tension headaches. Secondary headaches are triggered by an underlying disorder – such as infection, injury or a tumour – and are a side effect of the main illness.

Pain receptors and headache

You feel pain when various structures of your head are inflamed or irritated. These structures include:

the

muscles

and skin of the head

the

nerves

of the head and neck

the arteries leading to the

brain

the membranes of the

ear

, nose and throat

the sinuses, which are air-filled cavities inside the head that form part of the respiratory system.

The sensation of pain can also be ‘referred’, which means that pain occurring in one area can transmit the feeling of pain to an area nearby. An example is the referred pain of a headache arising from a sore neck.

Causes of headache

Anything that stimulates the pain receptors in a person’s head or neck can cause a headache, including:

stress

muscular tension

dental

or jaw problems

infections

diet

eye problems

hormonal influences

medications

disorders of the ear, nose or throat

disorders of the

nervous system

injury to the

head

, neck or spine

high blood pressure

poor posture - puts unnecessary strain on the muscles of the back and neck

hangover from abuse of

alcohol

drugs

temperature - extremes of

heat

or cold

dehydration - affects

blood pressure

noise - especially loud noises

temporal arteritis - inflammation of the artery at the temple, most common in elderly people

arthritis

meningitis

Headache caused by stress or tension

Tension headache is the most common type of headache. Two out of 3 people will have at least one tension headache in their lifetime, which:

feels like a tight band of pressure around the head

is often associated with muscle tightness in the head, neck or jaw

can be caused by physical or emotional stress

is best treated by making lifestyle adjustments, such as

exercise

, diet, stress management and attention to posture.

Misalignments of the spine and neck, poor posture and muscle tension can refer pain into the head. Therapies to treat recurring headache caused by musculoskeletal problems may include osteotherapy,

physiotherapy

chiropractic

Stress is thought to trigger our body’s ‘fight or flight’ response, which is characterised by shallow breathing, faster heart rate and raised blood pressure, and greater amounts of ‘stress chemicals’ such as adrenaline.

Stress can cause or worsen a headache in a number of ways, including:

tightening the muscles, particularly of the upper back, shoulders, neck and head

lowering a person’s tolerance to

pain

reducing the effects of medications such as pain-relievers

reducing the levels of endorphins, which are the body’s natural pain-relieving chemicals.

Headache and jaw or dental problems

If the teeth of a person’s upper and lower jaw fail to meet smoothly, the resulting muscle tension in the jaw can cause headache. Treatment may include correcting the bite, replacing missing

teeth

or using occlusal splints, which allow the jaw to close without dental interference. Surgery may be needed in severe cases.

Tooth decay

dental abscesses

and

post-extraction

infection can cause headache, as well as referred pain to the face and head, and these need to be professionally treated by a

dentist

Headache caused by infection

Many infections of the nose, throat and ear can cause headache.

Depending on the disorder, treatment can include medications such as antibiotics, decongestants or antihistamines. Persistent problems, such as chronic

tonsillitis

, may need surgery as a final resort. Consult with an ear, nose and throat specialist.

Headache caused by diet and food

According to some studies, what we eat and when we eat it can play a significant role in headache. Different causes of diet-related headache include:

fluctuations in blood-sugar levels, which can lead to spasm of the arteries in the head

caffeine

withdrawal, commonly caused by regular and excessive consumption of coffee or tea

food additives

, such as MSG (monosodium glutamate)

naturally occurring chemicals in foods, such as amines.

Some other foods can cause headache in susceptible people. It is important to seek professional help. Self-diagnosis of food sensitivities can result in unnecessary diets that may not work.

It’s a good idea to keep a diary of what you ate or drank in the 24 hours before a headache. This gives clues to the triggers of food-related headache. Healthcare professionals who may be able to help include a

doctor

dietitian

naturopath

Eye problems and headache

If a person has difficulties with their

vision

, such as

long-sightedness

, they tend to squint and strain their eye muscles in order to better focus their vision. Eye diseases such as

glaucoma

can cause headache by referring pain into the structures of the head.

Many of the eye problems that contribute to headache can be treated with prescription glasses or

contact lenses

. Talk to a qualified eye-care specialist such as an

optometrist

Medications and headache

Medications are designed for a particular target in the body, such as a diseased organ. However, they can also affect other areas in the body. Unwanted side effects or adverse reactions are possible with all medications, including prescription and over-the-counter medications,

herbal preparations

and

vitamin pills

Oral contraceptives (‘the pill’)

can cause headache as an unwanted side effect.

Hormone replacement therapy (HRT)

– also known as menopause hormone therapy – makes headaches worse for some women. Some

diabetes

medications can also make headaches worse.

Suggestions for reducing the risk of medication-induced headache include:

Follow the dosage directions on the label.

Don’t mix prescription medications with drugs such as alcohol.

Avoid dependence on painkillers.

Report any side effects or unusual symptoms to your doctor immediately.

If you believe that medications may be giving you recurring headache, it is important to consult with your doctor. In many cases, a different medication can be prescribed.

Pain-relieving medications and ‘rebound’ headaches

There are many causes of recurring headache, with multiple factors working in combination. Rather than address the causes, it may seem easier to take pain-relieving medications, such as aspirin. However, taking more than three doses of these per week could make your problem worse.

Once the medications wear off, the headache returns because the triggers remain. If you then take more pain-relieving medications, the cycle of relief and rebounding headache continues, prompting you to take ever-increasing amounts of medication.

Ear, nose and throat disorders and headache

Disorders of the ear, nose and throat that can cause recurring headache include:

sinus problems

caused by infection,

cold

flu

allergic reactions

such as hay fever

labyrinthitis

the general term for any type of inflammation of the inner ear

infection

of the ear, nose or throat, caused by either bacteria or viruses

trauma - such as a blow to the ear or perforation of the eardrum

hay fever

when the immune system overreacts to irritants such as pollen

tonsillitis

an infection most often caused by the bacterium

streptococcus.

The nervous system and headache

Irritated, inflamed or damaged

nerves

can bring on a headache. Causes may include:

haemorrhages - some health conditions, such as

hypertension (high blood pressure)

and

diabetes

, can damage the

blood vessels

infection - such as

meningitis

, which is inflammation of the membranes lining the brain and spinal cord

nerve damage - can be caused by, for example, vitamin deficiencies or trauma to the head or neck

very rarely, a tumour.

Neurologists specialise in disorders of the nerves and brain. It is rare for headaches to be caused by serious problems such as a brain tumour, but these need to be ruled out through medical examination.

Usually, you will only be referred to a neurologist after all other causes of chronic headache have been investigated and eliminated. Some neurological tests include

and

MRI scans

. Treatment depends on the disorder.

Cluster headache

Cluster headaches are relatively uncommon and tend to mainly affect men. Cluster headaches:

usually involve severe pain, localised to one eye

include other symptoms, like swelling and watering of the affected eye

can be triggered by alcohol and

cigarettes

, but the underlying cause is unknown

are treated with medication or oxygen therapy.

Diagnosis of headache

Headache can be caused by many contributing factors working together. That’s why you need professional advice to investigate and properly diagnose the specific factors behind your recurring headache.

In some cases, headaches may be a warning about more serious underlying problems. Tests can include scans,

eye tests

and sinus

x-rays.

Factors that are considered when diagnosing a headache include:

location of the pain, such as around one eye or over the scalp

degree of pain experienced

duration of the headache

other symptoms, such as visual disturbances or a sore neck

how often the headache recurs

factors that worsen the headache, such as certain foods

factors that improve the headache, such as massage.

Treatment for headaches

Successfully treating chronic headache usually requires a combined approach that takes all the triggers for a person into account.

Ask your doctor or healthcare professional for help in treating chronic headache. Your doctor can refer you to appropriate experts, such as ear, nose and throat specialists, neurologists, optometrists and physical therapists.

Treating a headache depends on its cause. Some of the various treatments include:

over-the-counter pain-relieving medications, such as aspirin or paracetamol

relaxation techniques, such as

massage

changing your diet

alternative therapies

, such as

acupuncture

or chiropractic

stress management

eliminating any medications that may be causing headache as a side effect, such as birth-control pills

medications that act on the arteries

treatment for any underlying disorder, such as high blood pressure, neck problems or jaw problems.

Choosing a complementary therapist

In addition to conventional medical treatment, you may benefit from the help of a

complementary therapist

. Usually, your doctor will have a list of trusted complementary therapists. If not, suggestions include:

Contact the professional association for your chosen therapy and ask for a list of members in your area.

Ask your friends for word-of-mouth recommendations.

During the first visit with your therapist, ask about their training and qualifications.

Treat with suspicion any therapist who advises you to stop your conventional medical treatment, and consult with your doctor before stopping any medication.

Where to get help

Your

GP (doctor)

Your

pharmacist

External Link

Neurologist

Dentist

orthodontist

Ear, nose and throat specialist

Eye-care professional

Osteopath

physiotherapist

chiropractor

Dietitians

Australia

External Link

Need treatment today?

Need treatment today, but it’s not life-threatening and you can’t get a GP appointment, there are services available:

Urgent Care Clinics

– provide care for conditions that require treatment today but not an emergency response (extended hours)

Nurse-on-Call

Tel.

1300 60 60 24

– for expert health information and advice (24 hours, 7 days)

Emergency care

In an emergency, always call triple zero (000)

Emergency department of your nearest hospital

Headache

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