Why Do I Get Headaches or Stomach Aches When I'm Stressed
This page reflects our understanding of mental health topics as of 2026. If you are reading this at a later date, some details may no longer be current, so please verify anything important against up to date sources. If you notice anything that needs updating, we would welcome you letting us know.
A deadline is coming up and your head starts to pound. A difficult conversation is on the calendar and your stomach churns for days. You might notice that during busy or tense periods, you reach for pain relievers or antacids far more often, and that the symptoms ease on holidays. It can feel strange that something happening in your mind shows up so clearly in your body.
Physical symptoms of stress are real, not imagined. The brain and body are in constant communication, and stress changes muscle tension, digestion, blood flow, and pain sensitivity in measurable ways.
It Could Be a Lot of Things
Medical conditions. Migraine, tension-type headache, irritable bowel syndrome, reflux, ulcers, and food intolerances are common and can all be worsened by stress. New, severe, or changing symptoms should be checked by a doctor.
Muscle tension. Stress tends to tighten muscles in the jaw, neck, shoulders, and scalp, which is a leading cause of tension headaches.
Sleep, caffeine, and meals. During stressful times, people often sleep less, drink more coffee, and skip meals, all of which can trigger headaches and stomach upset on their own.
Screens and lighting. Long hours at a screen, glare, and harsh lighting can contribute to headaches, particularly for people who are sensitive to bright lights.
Anxiety. Anxiety has a strong effect on the gut, which is why people often feel sick to their stomach before big events.
Please see a doctor promptly for a sudden, severe headache, a headache with fever, stiff neck, confusion, weakness or vision changes, or stomach pain with vomiting blood, black stools, or unexplained weight loss. Call 911 in an emergency.
When It Looks More Like Stress Showing Up in the Body
When physical symptoms rise and fall with stress, and medical causes have been checked, the stress response itself is often a key driver. When the body senses pressure, it releases stress hormones that tighten muscles, change how the gut moves, increase sensitivity to pain, and affect blood vessels in the head. Over time, chronic stress can keep these changes switched on.
Some people experience stress mainly through their body rather than as worry. They may not feel especially anxious, yet they get frequent headaches, stomach aches, back pain, or get sick more often.
Signs that stress is a major factor include:
- Symptoms that worsen during busy or tense periods and ease on holidays or weekends.
- Symptoms that appear before specific stressful events.
- Other physical signs of stress, such as a racing heart, poor sleep, or feeling on edge.
- Medical tests that have not found a cause that fully explains the symptoms.
Worrying about the symptoms themselves can add another layer. If you find yourself frequently searching online for explanations, that pattern is explored in Why Do I Keep Googling My Symptoms.
What Can Help
- Track patterns. Note when symptoms appear alongside sleep, meals, caffeine, and stress. Patterns often become clear within a few weeks.
- Release muscle tension. Stretching the neck and shoulders, relaxing your jaw, and short movement breaks can reduce tension headaches.
- Keep the basics steady. Regular meals, water, moderate caffeine, and consistent sleep reduce physical triggers.
- Calm the stress response. Slow breathing, progressive muscle relaxation, and regular exercise help the body shift out of stress mode.
- Address the source. Where possible, reducing the stress itself is the most lasting fix.
Getting Support at Pacific Maple Psych Centre
If stress keeps showing up in your body, therapy can help you manage the pressures behind it and learn practical ways to calm your nervous system. Psychological approaches work well alongside medical care for stress-related headaches and digestive symptoms.
Pacific Maple Psych Centre offers individual therapy for stress, anxiety, and stress-related physical symptoms, in Vancouver and virtually across British Columbia.
Book a SessionCommon Questions About Stress and Physical Symptoms
Can stress really cause headaches?
Yes. Stress increases muscle tension in the head, neck, and shoulders and affects pain sensitivity, which commonly leads to tension headaches. Stress can also trigger migraine attacks in people who are prone to them.
Why does stress upset my stomach?
The gut and brain are closely connected. Stress hormones change how the digestive system moves and how sensitive it is, which can cause nausea, cramping, diarrhea, or constipation.
How do I know if my symptoms are from stress or a medical problem?
Only a medical assessment can rule out physical causes, so it is important to see a doctor, especially for new or severe symptoms. Symptoms that consistently rise and fall with stress suggest it is a significant factor.
When is a headache an emergency?
Seek urgent care for a sudden, severe headache, or a headache with fever, stiff neck, confusion, weakness, numbness, vision changes, or after a head injury. Call 911 in an emergency.
Can stress make IBS worse?
Yes. Stress is one of the most common triggers for IBS flare-ups. Managing stress, alongside medical and dietary approaches, often helps reduce symptoms.
Why do I get physical symptoms but don't feel anxious?
Some people experience stress mainly through their body rather than as worried thoughts. The stress response can be active even when you do not consciously feel stressed.
Does jaw clenching cause headaches?
It can. Clenching or grinding your teeth, often during stress or sleep, strains jaw and facial muscles and can lead to headaches. A dentist can check for grinding and suggest a night guard if needed.
What relaxation techniques help with stress headaches?
Progressive muscle relaxation, slow breathing, neck and shoulder stretches, and regular exercise can all reduce muscle tension and help prevent stress-related headaches.
Can chronic stress cause long-term physical problems?
Long-term stress is linked to ongoing headaches, digestive problems, poor sleep, lowered immunity, and other health concerns. Reducing stress can improve physical as well as mental health.
How does psychological therapy help with stress-related physical symptoms?
Therapy can reduce the stress driving symptoms, teach relaxation and coping skills, and address worry about the symptoms themselves. It often works best alongside medical care.