Question and answer
Mild worm infections undiagnosed in children: Human worm infestations, esp. threadworm, can be overlooked in some cases,
because it may cause only mild or even absent symptoms.
Although the most common symptoms are anal itch (or vaginal itch),
which are obvious in severe cases,
milder conditions may fail to be noticed in children.
In particular, it may interfere with the child's good night's sleep.
Threadworm is a condition to consider in children with symptoms such as bedwetting (enuresis),
difficulty sleeping, irritability, or other sleeping symptoms.
Visual inspection of the region can often see the threadworms, at night when they are active,
but they can also be missed this way, and multiple inspections can be warranted if worms are suspected.
See the introduction to threadworm.
Undiagnosed stroke leads to misdiagnosed aphasia: BBC News UK reported on a man who
had been institutionalized and treated for mental illness
because he suffered from sudden inability to speak.
This was initially misdiagnosed as a "nervous breakdown" and other mental conditions.
He was later diagnosed as having had a stroke, and suffering from aphasia (inability to speak),
a well-known complication of stroke (or other brain conditions).
Dementia may be a drug interaction: A common scenario in aged care is for
a patient to show mental decline to dementia.
Whereas this can, of course, occur due to various medical conditions,
such as a stroke or Alzheimer's disease,
it can also occur from a side effect or interaction between multiple drugs
that the elderly patient may be taking.
There are also various other possible causes of dementia.
Mesenteric adenitis misdiagnosed as appendicitis in children: Because appendicitis is one of the
more feared conditions for a child with abdominal pain, it can be over-diagnosed
(it can, of course, also fail to be diagnosed with fatal effect).
One of the most common misdiagnosed is for children with mesenteric adenitis
to be misdiagnosed as appendicitis.
Fortunately, thus misdiagnosis is usually less serious than the reverse failure to diagnose appendicitis.
Blood pressure cuffs misdiagnose hypertension in children: One known misdiagnosis issue
with hyperension, arises in relation to the simple equipment used to test blood pressure.
The "cuff" around the arm to measure blood pressure can simply be too small to accurately
test a child's blood pressure.
This can lead to an incorrect diagnosis of a child with hypertension.
The problem even has a name unofficially: "small cuff syndrome".
See misdiagnosis of hypertension.
ADHD under-diagnosed in adults: Although the over-diagnoses of ADHD
in children is a well-known controversy, the reverse side related to adults.
Some adults can remain undiagnosed, and indeed the condition has usually been
overlooked throughout childhood.
There are as many as 8 million adults with ADHD in the USA (about 1 in 25 adults in the USA).
See misdiagnosis of ADHD or symptoms of ADHD.
Bipolar disorder misdiagosed as various conditions by primary physicians: Bipolar disorder (manic-depressive disorder)
often fails to be diagnosed correctly by primary care physicians.
Many patients with bipolar seek help from their physician, rather than a psychiatrist
See misdiagnosis of bipolar disorder.
Eating disorders under-diagnosed in men: The typical patient with
an eating disorder is female.
The result is that men with eating disorders often fail to be diagnosed or
have a delayed diagnosis.
See misdiagnosis of eating disorders or symptoms of eating disorders.
Depression undiagnosed in teenagers: Serious bouts of depression can be
undiagnosed in teenagers.
The "normal" moodiness of teenagers can cause severe medical depression
to be overlooked.
See misdiagnosis of depression or symptoms of depression.
Children with migraine often misdiagnosed: A migraine often fails to be
correctly diagnosed in pediatric patients.
These patients are not the typical migraine sufferers, but migraines can also occur in children.
See misdiagnosis of migraine or introduction to migraine.
Undiagnosed anxiety disorders related to depression: Patients with depression (see symptoms of depression)
may also have undiagnosed anxiety disorders (see symptoms of anxiety disorders).
Failure to diagnose these anxiety disorders may worsen the depression.
See misdiagnosis of depression or misdiagnosis of anxiety disorders.
Vitamin B12 deficiency under-diagnosed: The condition of Vitamin B12 deficiency
is a possible misdiagnosis of various conditions, such as multiple sclerosis (see symptoms of multiple sclerosis).
See symptoms of Vitamin B12 deficiency or misdiagnosis of multiple sclerosis.