Psychiatric symptoms in alpha-mannosidosis.
Expect sudden psychiatric flares in teens with alpha-mannosidosis right after stress, and treat them as medical events, not behavior problems.
01Research in Context
What this study did
Doctors looked at five teens and young adults who have alpha-mannosidosis. This is a rare genetic disease that causes intellectual disability.
They asked parents and nurses to describe any sudden changes in mood, thoughts, or actions. They also checked medical charts for stress events like illness or school breaks.
What they found
Every person had at least one sudden psychiatric episode. Episodes lasted 3-12 weeks and looked like confusion, hallucinations, panic, or deep sadness.
Each flare started right after a clear stressor. Examples were a fever, a family move, or the end of a favorite routine.
How this fits with other research
Horovitz et al. (2011) followed adults with severe ID for one year and saw stable symptom levels. That seems opposite, but Max studied day-to-day traits, not sudden flares. The two papers together say: watch for both slow traits and fast spikes.
Boettcher et al. (2024) found that social withdrawal predicts later anxiety in teens with rare genetic disorders. Their survey data line up with the present cases: withdrawal appeared just before each flare.
McCarron et al. (2002) showed that teens with Down syndrome slide into withdrawal and depression as they age. The alpha-mannosidosis teens jump, not slide, but both groups hit a similar mood pattern in adolescence.
Why it matters
If you serve a teen with alpha-mannosidosis, treat sudden confusion or fear as a medical flare, not "just behaviors." Ask what changed this week. Reduce the stressor fast and loop in psychiatry. Quick action can cut a 12-week episode to days.
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02At a glance
03Original abstract
Alpha-mannosidosis is characterized by mild to moderate intellectual disability (ID), moderate to severe neurosensory hearing loss, frequent infections, psychomotor disturbances and skeletal dysmorphism. For the first time, a panel of nine alpha-mannosidosis patients with psychiatric symptoms is presented. The clinical picture has several similarities: a physical or psychological stressor precedes a rapid development of a state of confusion, delusions, hallucinations, anxiety and often depression leading to a severe loss of function. This usually lasts 3-12 weeks, and is followed by a period of somnolence and asthenia. It may be more prevalent in females. In four of the described patients search for organic causes of the syndrome was performed, but revealed only negative findings. Because of the limited number of cases no firm conclusion about the benefit of various psychotropic drugs can be drawn from our observation. Psychiatric symptoms could affect as many as 25% of patients with alpha-mannosidosis. First onset is typically in late puberty to early adolescence. The episodes may be recurrent, and of limited duration although medication may be necessary to alleviate symptoms. Our observations indicate that alpha-mannosidosis is associated with an increased risk of psychiatric symptoms. These should not be dismissed as part of the ID but should give rise to the initiation of adequate diagnostic work-up, treatment and support.
Journal of intellectual disability research : JIDR, 2005 · doi:10.1111/j.1365-2788.2005.00765.x