What’s Mood, Bipolar, or Fear of Harm FOH?

Question: The overlap of mood instability from bipolar and the FOH symptoms is so confusing! How can I tell the difference between bipolar mood instability and the chaotic, anxious, defensive, angry symptoms that are caused by FOH?


Answer: While often difficult to distinguish between, there are some distinct differences between mood and thermoregulatory symptoms which get easier to understand the longer you’re looking at them. 


First of all, it’s important to remember that everyone experiences mood fluctuations throughout the day, and that is considered completely normal. Even for kids and adults with mood disorders, minor mood changes throughout the day are nothing to worry about. However, with clinically significant mood disruptions those changes in mood occur rapidly, unexpectedly, and without a clear cause. They include symptoms of depression and mania (or hypomania).


  • Depressive symptoms include feelings of sadness, irritability, loss of interest in pleasurable activities, and feelings of worthlessness and helplessness. 
  • Symptoms of mania include racing thoughts, irritability, distractibility, goal directed fixations known as “Mission Mode”, and grandiosity. (Hypomania looks similar, with reduced intensity.) 
  • In children, symptoms of depression, mania, and hypomania can also present as chronic irritability, crankiness, a quick temper, as well as rigidity and refusal to try new things.
  • Mood swings happen quickly, sometimes without any warning or outside stimulus, and can change multiple times throughout a single day. Often, but not always, manic and hypomanic symptoms occur in the late afternoon or early evening.


As for the thermoregulatory disturbances that go along with Fear of Harm, they trigger symptoms that can look like mood disruptions, but they really aren’t. Those symptoms are governed by the temperature disruptions and include fear, anxiety, hypervigilance, aggression, and sleep disruptions. 


But let’s start with understanding thermodysregulation, which is the body’s inability to correctly regulate its temperature. This is a physical phenomena that may be independent from the mood disruptions explained above.


The ratio between proximal and distal body temperature is a measure of how well the body is shifting core heat to the skin so that it will be dissipated. Clinical signs of a disturbance in this system may sometimes manifest in the following ways:


  • Often, the child feels hot and sweaty in normal room temperatures. These neutral ambient temperatures don’t feel so neutral to the child and they feel excessively hot in the evening and cold in the morning.
  • Other telltale signs of temperature dysregulation are bright red ears that are often warm or hot to the touch.
  • Another is a refusal to wear weather appropriate clothes, for example wearing shorts or not wearing a coat in cold winter temperatures and experiencing little to no discomfort when exposed to the cold.


This disruption in body temperature regulation leads to several other symptoms. 


Sleep/Wake Disturbances, which are categorized in three different ways:


  1. Issues such as sleepwalking, sleep talking, night sweats, bedwetting, and teeth grinding, which demonstrate problems with the proper execution of sleep cycles.
  2. Frequent and recurrent nightmares and night terrors themed with pursuit and/or abandonment with violent and often gory imagery involving scenarios where they or someone they love is being hurt, maimed, or killed. These images may linger with the patient long after they awaken and may plague them throughout the day as repetitive intrusive thoughts.
  3. Alterations in circadian rhythms, including difficulty falling asleep, difficulty staying asleep, and difficulty waking. 


  • Falling asleep: it’s very difficult for the child to “wind down” in the evenings and prepare for bed as they experience rising energy levels, anticipatory dread about being unable to fall asleep, and anticipatory fear of nightmares. 
  • Staying asleep: restlessness includes frequent middle of the night awakenings, trips to the bathroom, and bedsheets, pillows, and pajamas in wild disarray. 
  • Waking: they often do not appear to have the energy to move in the morning when awakened.


Fear/Anxiety, which is triggered because the part of the brain that controls temperature regulation is the same part of the brain that controls the activation of the fight or flight instinct. As a result, children with thermoregulatory disturbances experience a triggering of their fight or flight response when it’s not needed, causing them to feel intense anxiety and fear. The child is on constant alert, looking for threats and dangers, causing separation anxiety, fear of germs, fear of intruders, or of the dark to be pushed to debilitating degrees. They create elaborate rituals at bedtime, mealtime, or bath time to help them feel safe. 


Functioning in a near constant state of fight or flight also results in distorted reactions to normal stimuli. They experience threats that don’t exist, either by misperceiving something neutral in their environment as threatening, or by feeling excessively defensive from feeling embarrassed, misunderstood, unheard, dismissed, or rejected. 


Aggression can be tricky because all children can be aggressive at times and it can be difficult to differentiate clinically significant aggression from either normal childhood behaviors, or from other diagnoses. 


It’s developmentally normal for young children to have tantrums. However, in a child triggered by thermodysregulation their tantrums continue for many years past what is considered developmentally normal. The tantrums also can last for several hours and are accompanied by physical and verbal aggression, such as screaming, throwing things, slamming doors, putting holes in walls, kicking, hitting, biting, and scratching. These behaviors escalate with the child’s age to include cursing and verbal threats. 


Parents know when their child’s tantrums are unusual and deviate from the developmentally normal outbursts that occur in early childhood. 


Aggression is also shown in other ways such as defiant and oppositional behavior and refusals to follow simple instructions, complete expected tasks, and do basic chores such as teeth brushing, showering, homework, and getting dressed. Requests can be met with verbal abuse which can quickly escalate into tantrums, leaving parents, siblings, and caregivers feeling as though they are walking on eggshells all of the time.


So what does mood stability look like then?

Generally speaking, mood stability while someone is still experiencing thermoregulatory disturbances and their accompanying symptoms, would look like this:


  • Fewer mood swings throughout the day;
  • Fewer episodes of sadness, general irritability, and feelings of worthlessness;
  • Increased participation in pleasurable activities and in trying new things;
  • Fewer episodes of racing thoughts, distractibility, and grandiosity; and
  • An increase in flexibility and adaptability.

Submit Your Questions


Don’t forget to submit your questions for our special newsletter “Your Questions Answered”.

Each week we select a question from a member to be answered and sent to your inbox.


Click the link below to submit your question, or email us at answers@cmhrc.org



Leave a Reply

%d bloggers like this: