Explanation




Hypokalemia can result in paralytic ileus,rhabdomyolysis, weakness, and cardiac repolarization abnormalities. It is a common complication along with hyponatremia of starting
patients on diuretics. (

Case 23
You see a 40-year-old woman with throbbing headaches. She reports that the symptoms began approximately 2 months ago and have gradually worsened. They are always on the right side. On one occasion, she had a prolonged visual aura of zigzag lines that lasted for one day
and persisted after the headache had resolved. Which of the following features is not an alarm symptom that should prompt concern for a serious cause of headache?

Answer and explanation case 23

The patient has old headaches (ie, they are the same in character as her usual headaches, albeit more severe). Therefore, the diagnosis for her headaches remains the same. Cervico￾genic headache is generally a disease of middle-aged or older patients and is uncommon in young women. Occasionally, it can occur in younger patients after whiplash-type neck injuries. It is most commonly a burning or dull pain in the occiput
and forehead. Brain tumor is a new headache. The character
and description of her pain have not changed, as one would
expect if a new source, such as brain tumor, were the cause of
the headache.
The unilateral, throbbing nature of the headaches is typical of migraine. The occasional visual aura and associated
nausea confidently establish the diagnosis of migraine with
great certainty. These 2 features most accurately distinguish
migraine from tension-type headache. She has no alarm
symptoms. The challenge is to determine why the headaches
are more severe and frequent now. Her headaches are likely
worse due to a change in her lifestyle including triggers of
irregular sleep and excessive caffeine.

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