The Portugal Health Declaration Form is a simple paper to be filled out and sent to various pharmacies, physicians and hospitals in Portugal so as to get a medical prescription for certain medical treatments. The majority of the time, one fills out the declaration form only once in the time of obtaining a health diagnosis that's when the doctors give you a health prescription. If you have to fill out the declaration form over once, then it is recommended that you take action each time you get a medical diagnosis. This would save you the trouble and cost incurred for repeating the same process.