My 8 yr old is having a dry cough x 1 week. She has now developed a raised red rash in the armpit of her left arm. She has had a low grade fever.  I have given her Tylenol Cold for fever and cough and just an OTC ointment for rash. Do I need to be concerned as she is still coughing and the rash.
Child Chat Doctor.  Generally it lasts for 5-10 days irrespective of the use of antibiotics which are only effective in case there is a secondary bacterial infection. Giving over the counter antiallergic like cetirizine syrup should help in reducing both the cough and the rashes. Giving steam inhalation should also help. Water in the form of vapor would reach deep into the lungs and help in diluting the cough. Give Tylenol if the temperature is raised. Since the cough is lasting for 7 or more days, there could be reason to get concerned, and I would suggest that you visit a doctor and get her examined.