preferring milk over food is common in toddlers , and it s important to distinguish a behavioral issue from an organic cause , did you notice that she might not able to eat because she feels pain ? or it is a preference issue ? if it s a preference, then cut down the milk and make her hungry a little bit and offer her sweet food first, mixing with that a little vegetables and fruits. don t use conditioning ( prize for eating ) method , because it will not help . the papytazym is used in cases of suspected herpes and oral pains , if nothing is there don t use it aptivin is an antihistamine which used in Cases of allergy. for the second question : the most common cause of Cough in children is post nasal drip , from adenosinusitis or allergic rhinosinusitis, if he doesn t snore at sleep or have a runny nose all the time then the possibility of these conditions are low . the second most common is for sure is asthma , which can be assessed by careful physical exam and history , a chest XRAY would be helpful in this case to role out other causes , like pneumonia or foreign body inhalation . so if diagnosis of asthma is established she must enter put on two types of inhalers one of them will be used when cough episodes are present , the second one used for 3 months . I hope this helps