What is the cause of the pain in the lower left side of the back of the head?

Pain in the lower left part of the back of the head may be related to physiological factors, or it may be caused by trauma, tension headache, occipital neuralgia and other reasons.
1. Physiological factors: for example, if the left lower part of the back of the brain is stimulated by cold for a long time, resulting in spasm and contraction of the cerebral blood vessels in the area, it may cause pain in the left lower part of the back of the brain.
2. Trauma: If the left lower part of the back of the brain is accidentally hit or struck by external forces, resulting in trauma, it may cause pain in the left lower part of the back of the brain, which may also be accompanied by localized swelling, bruising and other manifestations.
3. Tension headache: When tension headache attacks, it may lead to head muscle contraction, which may cause pain in the lower left part of the back of the brain, and may be accompanied by insomnia, dizziness and other symptoms.
4. Occipital neuralgia: the occipital nerve innervates the middle region of the scalp at the back, and when occipital neuralgia strikes, it may cause pain in the lower left part of the back of the brain.
If you have pain in the lower left part of the back of the head, you should consult a doctor in time after excluding physiological factors, and give targeted treatment after clarifying the cause.