Have your near ones ever had an asthma attack.
Emergencies like Asthma attack are not served by every general physician.
You need a specialised hospital or chest specialist to take care of an Asthma attack.
In case of emergencies like Asthma attack, diabetes attack and epilepsy if the patient is taken on the treatment spot on time it can save a life.
When the user logins the app he can select the kind of emergency and will get the location and direction to the clinics / hospitals serving that emergency on map.
Nice Idea.