I've been feeling this dull pain near my shoulder or armpit, and I'm starting to worry if it might be cardiac-related. Though, it could just be a muscle strain, like what WebMD is suggesting. I wanted to get some opinions to understand what might be going on. Could it really be something related to the heart, or is it more likely muscular?

Cold Sensation in Left Side Brain and Face _Possible Causes_ 1. _Migraine or tension headache_: Cold sensations can be a symptom of migraines or tension headaches. 2. _Trigeminal nerve issues_: The trigeminal nerve controls facial sensations; issues with this nerve can cause cold sensations. 3. _Sinus pressure or infection_: Sinus issues can cause referred pain or sensations in the face and head. 4. _Dental problems_: Toothaches or abscesses can cause radiating pain or sensations. 5. _Neurological conditions_: Certain conditions like multiple sclerosis, neuropathy, or stroke can cause abnormal sensations. _Recommendations_ 1. _Consult a doctor_: Schedule an appointment with your primary care physician or a neurologist. 2. _Keep a symptom journal_: Record when the cold sensations occur, their duration, and any potential triggers. 3. _Try relaxation techniques_: Stress can exacerbate symptoms; try relaxation techniques like meditation, deep breathing, or yoga. 4. _Maintain good oral hygiene_: Regular dental check-ups and good oral hygiene can help rule out dental causes. _Urgent Medical Attention_ 1. _Sudden severe headache_: If you experience a sudden, severe headache, seek immediate medical attention. 2. _Facial weakness or numbness_: If you experience facial weakness, numbness, or difficulty speaking, seek urgent medical attention.