Hello, Headaches dizziness, chest pain may happen from a lack of oxygen to your brain and other tissues combined with too much carbon dioxide. A disease which can cause this condition is chronic obstructive airways disease or COPD. Detailed Answer: When dizziness, chest pain, headache and cough happen at the same time they are usually unrelated, though some conditions can cause both symptoms, like from a lack of oxygen to your brain. Smoking is the most common cause of COPD. COPD is a chronic lung disease that makes breathing difficult. It often takes many years to develop. People who have emphysema often have a chronic cough, and chest tightness. COPD is linked to a condition called hypoxia which occurs when your blood doesn’t have enough oxygen. This overworks your heart and slows down tissue functions. It s important to treat the condition to prevent complications. If you have COPD hypoxia, you ll need lifelong treatment to prevent complications of oxygen deprivation. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr Enton Dore, General & Family Physician