Inflammation occupies a liminal position in the depth-psychology corpus, functioning simultaneously as physiological event, psychosomatic signal, and metaphor for the body's registration of psychic distress. Barrett's constructivist neuroscience furnishes the most sustained analytical treatment: chronic inflammation, driven by proinflammatory cytokines and a persistently unbalanced body budget, is proposed as a shared substrate for conditions ordinarily classed as distinct mental disorders — depression, anxiety, and unexplained pain alike. The cortisol-inflammation axis becomes for Barrett the biochemical hinge between social adversity and clinical illness. Maté enlarges this axis into an explicitly psychosomatic argument, reading joint inflammation and autoimmune flare-ups as somatic speech — the body's insistence that suppressed affect, particularly rage and grief, be finally acknowledged. His clinical narratives present inflammation not as mere pathology but as a legible communicative act embedded in a history of relational trauma. Lench's functional account positions proinflammatory cytokines as mechanistic contributors to anhedonia, social pain, and depressive phenomenology. Khalsa and the interoception literature trace how systemic inflammation alters mood via subgenual cingulate activity and mesolimbic connectivity. Ancient antecedents appear in Plato's Timaeus, where blood-and-bile corruptions prefigure the humoral logic later metabolized by depth psychology. Across all these registers, inflammation marks the site where the social, the psychological, and the biological converge.
some major illnesses considered distinct and 'mental' are all rooted in a chronically unbalanced body budget and unbridled inflammation. We categorize and name them as different disorders, based on context
Barrett argues that chronic inflammation, linked to body-budget dysregulation, is the common biological substrate underlying what are conventionally classified as separate mental illnesses.
, How Emotions Are Made: The Secret Life of the Brain, 2017thesis
When you have too much cortisol in your blood for a long time, inflammation flares up. You feel devoid of energy... a vicious cycle can ensue.
Barrett details the cortisol-inflammation feedback loop by which chronic social adversity and body-budget imbalance produce escalating physiological and psychological deterioration.
, How Emotions Are Made: The Secret Life of the Brain, 2017thesis
Such hyperfunctioning on top of hidden inner distress is a recurring theme among the many autoimmune patients I've encountered... Just prior to the onset of her agonizing joint inflammation, Mee Ok was in a complicated romantic partnership
Maté presents joint inflammation as psychosomatically precipitated by unacknowledged emotional distress and chronic self-suppression, using clinical narrative to connect biography to bodily symptom.
, The Myth of Normal: Trauma, Illness, and Healing in a Toxic Culture, 2022thesis
It was my body's way of saying, 'Wake up, wake up. You're not helping yourself holding this much anger and rage deep down inside.' Anger and rage are not feelings I want to hold on to, but I do see them as guides
Maté's patient reframes rheumatoid inflammation as a somatic communication from suppressed affect, treating flare-ups as intelligible signals requiring emotional rather than purely pharmacological response.
, The Myth of Normal: Trauma, Illness, and Healing in a Toxic Culture, 2022thesis
flush with cortisol and cytokines: See more on the relationship between cytokines and cortisol levels... and chronic inflammation sets in... This situation actually sensitizes you to interoceptive and nociceptive input
Barrett's footnotes consolidate the empirical literature showing that chronic inflammation sensitizes interoceptive pathways, amplifying pain and illness susceptibility.
, How Emotions Are Made: The Secret Life of the Brain, 2017supporting
Inflammation causes mood changes through alterations in subgenual cingulate activity and mesolimbic connectivity.
Khalsa's citation of Harrison et al. establishes that inflammation's mood effects are neuroanatomically mediated via the subgenual cingulate and mesolimbic systems, grounding psychosomatic claims in brain circuitry.
, Interoception and Mental Health: A Roadmap, 2018supporting
Inflammation causes mood changes through alterations in subgenual cingulate activity and mesolimbic connectivity. Biol Psychiatry 66:407–414.
A parallel citation confirms the neurobiological pathway through which systemic inflammation induces affective dysregulation, linking interoceptive research to mood disorders.
, Interoception and Mental Health: A Roadmap, 2018supporting
Pro-inflammatory cytokines... are implicated in anergia, anhedonia, dopamine suppression, and depressive feelings. In addition, pro-inflammatory cytokines are implicated in social pain, such as that arising from social exclusion.
Lench situates proinflammatory cytokines as functional mediators linking physical immune response to psychological states including anhedonia, dopamine suppression, and the subjective pain of social rejection.
, The Function of Emotions: When and Why Emotions Help Us, 2018supporting
Not all types of inflammation involve cytokines, and not all cytokines cause inflammation. We're concerned only with chronic inflammation, which is caused by proinflammatory cytokines.
Barrett clarifies terminological scope, restricting her psychological account to chronic inflammation mediated by proinflammatory cytokines, distinguishing it from acute inflammatory responses.
, How Emotions Are Made: The Secret Life of the Brain, 2017supporting
I saw my entire digestive system from mouth to rectum. There were red blistering ulcers throughout my entire digestive system. There was a flaming, flowing hot lava, adding fuel to the fire. It was just raging
Maté presents a patient's visionary body-image — fire and ulceration throughout the digestive tract — as an intuitive symbol connecting traumatic rape to Crohn's disease, illustrating the somatic translation of psychic wounding.
, The Myth of Normal: Trauma, Illness, and Healing in a Toxic Culture, 2022supporting
Stress, Food, and Inflammation: Psychoneuroimmunology and Nutrition at the Cutting Edge... Yoga's Impact on Inflammation, Mood, and Fatigue in Breast Cancer Survivors
Barrett's bibliography clusters psychoneuroimmunology research on stress, nutrition, yoga, and inflammation, situating the term at the intersection of lifestyle, mood, and immune function.
, How Emotions Are Made: The Secret Life of the Brain, 2017supporting
when the flesh wastes and returns into the veins there is discoloured blood as well as air in the veins, having acid and salt qualities, from which is generated every sort of phlegm and bile. All things go the wrong way
Plato's Timaeus offers a proto-inflammatory model in which internal humoral corruption — blood, bile, and phlegm going 'the wrong way' — anticipates the later psychosomatic understanding of bodily disease as disorder of inner economy.
, Timaeus, -360aside
when the flesh becomes decomposed and sends back the wasting substance into the veins... at war with themselves, because they receive no good from one another, and are hostile to the abiding constitution of the body
Plato's account of flesh decomposition and humoral corruption prefigures the concept of systemic inflammatory processes as internal warfare against the body's constitutive order.
, Timaeus, -360aside
name of a snake that causes inflammation (Arist., Ds.)... 'blowing up, ignition, inflammation' (lA, Aret.)
Beekes traces the Greek root of inflammation to the verb meaning 'to blow up, kindle, burn,' illuminating the ancient conceptual linkage of inflammatory processes with fire, ignition, and destructive heat.
, Etymological Dictionary of Greek, 2010aside