Dizziness when coughing is usually caused by excessive intrathoracic pressure during coughing, resulting in inadequate blood flow to the brain and causing dizziness. The main treatment for this condition is coughing, as the dizziness symptoms are correlated with coughing, i.e. coughing causes dizziness and not coughing does not. If cough medication is used, dextromethorphan and Chuanbei loquat can be applied. If you have an oxygen absorber at home, you can inhale oxygen appropriately, which is also very effective and can quickly relieve dizziness. Generally 3-5 days can be good relief of dizziness, do not worry too much.