Neurological Hypersensitivity

25^th June 2026

Neurological hypersensitivity underlies neurodevelopmental and psychiatric conditions including autism, anxiety disorders, and ADHD. Growing numbers of patients experiencing sensory overwhelm, emotional dysregulation, and sleep disruption are exploring medical cannabinoids to address this dysfunction.

This manifests through: heightened perception (sound, light, touch, smell, taste), central sensitization (amplified pain signals), neuronal hyperexcitability (emotional reactivity), and autonomic imbalance (affecting heart rate, breathing, and stress tolerance).

How Cannabinoids Can Help

Medical cannabinoids as adjunctive treatments indicate effectiveness for reducing neuronal hyperexcitability and dysregulation—key features of neurological hypersensitivity in which neurons fire more readily than normal and neural networks become overactive [1]. Cannabinoids interact with the endocannabinoid system (ECS), which function to regulate neural excitability, filtering sensory information, modulating emotional responses, and promoting sleep. For selected individuals with neurological hypersensitivity, cannabinoids may help restore balance to dysregulated neural networks.

Mechanisms of Action

Tetrahydrocannabinol (THC)

THC is one of the active compounds found in cannabinoids, and partially activates CB1 receptors within the central and peripheral nervous systems. In some individuals, THC may facilitate relaxation and improve sleep quality. Individual responses vary considerably and are dose-dependent. Accordingly, treatment planning, formulation selection, and dosing should be guided by healthcare professionals with regular reassessment based on individual response patterns.

Cannabidiol (CBD)

CBD is a non-intoxicating and non-psychoactive cannabinoid exerting therapeutic effects through distinct mechanistic pathways, including 5-HT1A receptor agonism, TRPV1 channel modulation, and other non-cannabinoid receptor-mediated mechanisms. CBD may reduce anxiety and support emotional regulation in individuals, by working through several pathways in the body and brain.

Conditions Associated with Neurological Hypersensitivity

Neurological hypersensitivity is a condition that occurs across multiple neurodevelopmental and psychiatric conditions. These include autism spectrum disorder, anxiety disorders, attention-deficit/hyperactivity disorder (ADHD), obsessive-compulsive disorder (OCD), and other conditions characterised by heightened responsiveness to sensory, emotional, or cognitive stimuli. The underlying neurological mechanisms—excessive neuronal firing, imbalanced excitatory-inhibitory signalling, and dysregulated stress responses—are common across these conditions, making neurological hypersensitivity a unifying framework for understanding symptoms that span diagnostic categories [2].

Common Characteristics Associated with Neurological Hypersensitivity

Individuals with neurological hypersensitivity may experience:

• Increased neuronal excitability and heightened activity within neural networks
• Alterations in the balance between excitatory and inhibitory signalling within the nervous system
• Heightened stress sensitivity and exaggerated responsiveness to perceived stressors
• Sensory hypersensitivity to sound, light, touch, and other stimuli
• Emotional reactivity and difficulty recovering from distress
• Sleep dysregulation
• Difficulty filtering, processing, or prioritising information
• Sensory and cognitive overwhelm in stimulating environments

Conventional Approaches to Managing Neurological Hypersensitivity

Management is typically individualised and focuses on reducing symptom burden, improving daily functioning, and supporting quality of life. Depending on the individual’s needs, treatment approaches may include:

• Sensory accommodations: Strategies to reduce overwhelming sensory input, such as access to quiet spaces, use of noise-cancelling headphones, sunglasses, weighted items, or scheduled sensory breaks.
• Environmental modifications: Adjustments to the home, school, or workplace environment, including reducing visual clutter, controlling lighting, minimising background noise, and creating predictable sensory environments.
• Structured routines and predictability: Establishing consistent routines, clear expectations, and planned transitions to help reduce stress and sensory overload.
• Therapeutic interventions: Support from healthcare professionals such as occupational therapists, psychologists, speech therapists, or other specialists to develop coping strategies and improve participation in daily activities.
• Psychological support: Approaches such as mindfulness-based interventions, stress management techniques, cognitive behavioural therapy (CBT), or acceptance and commitment therapy (ACT) to help individuals manage emotional responses and improve resilience.
• Management of associated symptoms or conditions: Where appropriate, pharmaceutical medications may be prescribed to address specific symptoms such as anxiety, sleep disturbances, attention difficulties, mood symptoms, or other co-occurring conditions.

Cannabinoids in Neurological Hypersensitivity

Neural Excitability and Network Regulation

In a literature review, they demonstrated that cannabinoids modulate neuronal excitability through multiple mechanisms, affecting brain glutamate and γ-aminobutyric acid (GABA) levels in regions linked to neurological hypersensitivity [3,4]. The endocannabinoid system regulates synaptic transmission and neural network stability through CB1 receptor-mediated mechanisms, contributing to the restoration of balance in dysregulated brain systems [3]. Additionally, cannabinoids—particularly CBD—exert neuroprotective effects and reduce neuroinflammation, restoring neural homeostasis in conditions characterised by dysregulated neural excitability [5].

Sensory Processing and Overwhelm

The endocannabinoid system plays a crucial role in filtering sensory information during early brain development and may help regulate sensory processing in neurological hypersensitivity. Research in autism spectrum disorder indicates that CBD-dominant formulations are associated with improvements in sensory sensitivity, anxiety, sleep, and behavioral outcomes, though effects vary across individuals [2]. Further research is needed to establish efficacy and optimal treatment parameters.

Emotional Regulation and Stress Responsiveness

In 2019, a large case series in the Permanente Journal [6] found that CBD reduced anxiety in 72 adult patients, with improvements sustained throughout the study period [6]. CBD modulates neural activity in the amygdala and anterior cingulate cortex, potentially reducing emotional over-reactivity and enhancing emotional regulation—particularly beneficial for individuals with heightened emotional reactivity [4].

Sleep Regulation

Sleep disruption is nearly universal in neurological hypersensitivity and significantly worsens daytime symptoms. A 2019 review found that balanced THC-CBD formulations improved sleep quality and reduced sleep latency, thereby improving overall neurological regulation [7].

Benefits of Cannabinoids

• Multi-System Effects: Early evidence suggests cannabinoids may address multiple symptoms—sensory hypersensitivity, emotional dysregulation, sleep disruption, and anxiety—though further research is needed [3,4,5].
• Favorable Tolerability Profile: CBD-based therapies are generally well-tolerated, with most common adverse effects being mild to moderate (e.g., diarrhea, nausea, drowsiness) [6]. However, comparative safety data with conventional medications remains limited, and individual responses vary.
• Neurorestorative Potential: Emerging research indicates that CBD may affect synaptic plasticity and facilitate neurogenesis. Studies demonstrate that CBD can attenuate decreases in hippocampal neurogenesis and dendritic spine density induced by chronic stress, and may preserve GABA neuron populations in neurodevelopmental models [5,8]. These mechanisms show promise for longer-term improvements in neural regulation and resilience, though clinical translation and long-term outcomes in humans require further investigation [8].

Side effects of CBD

CBD is generally well-tolerated. Most common side effects are mild to moderate and include diarrhea, nausea, appetite changes, somnolence, and fatigue. Liver enzyme elevation may occur, particularly when combined with other medications also metabolized in the liver. Serious adverse effects are rare. Monitor liver function tests at baseline and periodically, especially in patients with hepatic impairment or taking hepatotoxic medications.

Drug Interactions

Cannabinoids, particularly CBD, can affect how your body processes other medications by inhibiting key liver enzymes called CYP3A4, CYP2C9, and CYP2C19. When these enzymes are inhibited, certain medications—including some ADHD treatments, blood thinners, heart medications, and others—may build up to higher levels in your bloodstream, potentially increasing side effects. Additionally, other medications may also inhibit these same enzymes, influencing how your body processes CBD. The degree of interaction varies based on the dose of the cannabinoids as well as the dose of your other medications, your metabolism, and individual factors. Always inform your healthcare provider about all medications and supplements you are taking before starting cannabinoid therapy

Conclusion

For individuals with significant neurological hypersensitivity who continue to experience sensory overwhelm, emotional dysregulation, sleep difficulties and anxiety despite comprehensive environmental and therapeutic support, medical cannabinoids may offer meaningful therapeutic benefit. By addressing the underlying neural dysregulation as well as managing individual symptoms, cannabinoid therapy may be a suitable adjunctive approach that aims to address underlying mechanisms associated with neurological hypersensitivity. By ensuring specialist medical oversight and individualised treatment planning, AKOS BIO can responsibly provide patients access to cannabinoid-based therapies that improve quality of life.

How to Access AKOS BIO Cannabinoid Therapy

If you are interested in exploring cannabinoid-based treatment as part of your therapeutic plan, discuss this option with your treating healthcare provider. They can help determine whether cannabinoid therapy may be be appropriate for your individual circumstances.

Alternatively, if you would like to explore AKOS BIO’s pharmaceutical-grade cannabinoid products, you can book a consultation with an independent prescribing healthcare practitioner via the AKOS BIO website.

AKOS BIO provides pharmaceutical-grade cannabinoid products and educational resources to support patients and healthcare professionals. Prescribing decisions are made independently by qualified healthcare practitioners.

In South Africa, AKOS BIO doctors will apply for your Section 21 licence (SAHPRA) on your behalf if medical cannabis is appropriate for your condition. The permit is valid for six months and can be renewed if treatment is effective.

For more information or to book a consultation:

Website: [www.akos-bio.com](https://www.akos-bio.com)

WhatsApp: 066 269 1108

References

[1] Ibeas Bih, C., Chen, T., Nunn, A. V., Bazelot, M., Dallas, M., & Whalley, B. J. (2015). Molecular targets of cannabidiol in neurological disorders. Neurotherapeutics, 12(4), 699-730. https://doi.org/10.1007/s13311-015-0377-3

[2] Pereira, D. A., Cheidde, L., Megiolaro, M. D. R., Camargo, A. E. F., Weba, E. T. P., Soares, V. G., et al. (2025). Efficacy and Safety of Cannabinoids for Autism Spectrum Disorder: An Updated Systematic Review. Cureus, 17(3), e80725. https://doi.org/10.7759/cureus.80725

[3] Lu, H. C., & Mackie, K. (2016). An introduction to the endogenous cannabinoid system. Biological Psychiatry, 79(7), 516-525. https://doi.org/10.1016/j.biopsych.2015.07.028

[4] Pretzsch, C. M., Freyberg, J., Voinescu, B. I., Lythgoe, D. J., Horder, J., Mendez, M. A., et al. (2019). Effects of cannabidiol on brain excitation and inhibition systems; a randomised placebo-controlled single dose trial during magnetic resonance spectroscopy in adults with and without autism spectrum disorder. Neuropsychopharmacology, 44(8), 1398-1405. https://doi.org/10.1038/s41386-019-0333-8

[5] Campos, A. C., Guimarães, F. S., Mechoulam, R., & de Aguiar Corrêa, F. (2017). Plastic and neuroprotective mechanisms involved in the therapeutic effects of cannabidiol in psychiatric disorders. Frontiers in Pharmacology, 8, 269. https://doi.org/10.3389/fphar.2017.00269

[6] Shannon, S., Lewis, N., Lee, H., & Hughes, S. (2019). Cannabidiol in anxiety and sleep: A large case series. The Permanente Journal, 23, 18-041. https://doi.org/10.7812/TPP/18-041

[7] Kuhathasan, N., Dufort, A., MacKillop, J., Gottschalk, R., Minuzzi, L., & Frey, B. N. (2019). The use of cannabinoids for sleep: A critical review on clinical trials. Experimental and Clinical Psychopharmacology, 27(4), 383-401. https://doi.org/10.1037/pha0000285

[8] Stern, C. A. J., Achaval, M., Eslami, B., & Sanches, R. F. (2020). The pro-neurogenic effects of cannabidiol and its potential therapeutic implications in psychiatric disorders. Frontiers in Behavioral Neuroscience, 14, 109. https://doi.org/10.3389/fnbeh.2020.00109