Mild asthma with dust allergy can cause coughing and chest tightness, and the chest and back pain you feel is often due to muscle strain from repeated coughing or airway irritation. This kind of pain usually increases with movement or deep breathing and is commonly seen in asthma flare-ups. However, it is still important to make sure the symptoms are well controlled. Asthma symptoms can worsen when exposed to triggers such as dust, pollution, or cold air, so avoiding these triggers is important. Doctors may adjust inhalers or suggest medicines only if needed after proper evaluation, so avoid starting anything new on your own. If your cough or breathing issues are not well-controlled, your treatment plan may need to be reviewed. You can manage this by keeping your environment dust-free, using a mask when needed, and following your inhaler technique correctly. Stay hydrated, do steam inhalation if helpful, and try gentle breathing exercises. If the chest pain becomes severe, you feel breathless, or the symptoms worsen, consult your doctor promptly for proper assessment and treatment.