Experiencing dizziness, rapid breathing, and nausea together can be caused by several conditions, including anxiety or panic attacks, dehydration, low blood sugar, infections, anaemia, or even heart or lung-related problems, so it is important to look at the overall situation and triggers. For example, a panic attack can cause fast breathing and dizziness, while low haemoglobin (anaemia) or dehydration can also lead to similar symptoms. Try to rest, stay hydrated, and eat regular meals, but you should seek medical attention if symptoms are severe, persistent, happening repeatedly, or associated with warning signs like chest pain, fainting, confusion, high fever, or worsening breathlessness, as these could indicate a more serious problem that needs prompt evaluation and treatment.