As described by you develop cold running nose very frequently especially in winters . You feels suffocation during morning hours . All this are suggestive of allergic reactions to cold air.you have allergic rhinitis and most of time it is associated with allergic bronchial asthma.in this condition our airways are hypersensitive to various stimuli causing constriction of air ways.thats why you feel suffocated some times.to confirm the diagnosis pulmonary function test is to done in which we look for airways obstruction and it's reversibility to normal after giving bronchodilators . In asthma reversibility is present . If it is diagnosed that you have asthma.then on the basis of frequency and duration of attacks of breathlessness we classify this in to acute or chronic intermittent or persistent . Treatment will depend on that.on the basis of information that you have given this seems to be acute intermittent asthma. You need a bronchodilator containing inhaler such as that of salbutamol . That you have to inhale on sos basis and you have to keep this with you always . Because some times sever bronchospasm may occur . If your symptoms increase or not subsiding plz consult to a physician it can be managed very easily at this initial stage.