I am constantly tired I sleep almost all. day long
Investigations are needed
Hello and welcome to Ask A Doctor service.
I have reviewed your query and here is my advice.
There can be many causes of sleepiness during day. The causes can include anemia, lung problems, heart or kidney problems, depression, etc.
Kindly elaborate on your symptoms. Also let me know how it started, are you on any medicines, any other symptoms, etc.
Such symptoms require tests. If you have done any tests recently, then please upload the reports.
Hope this helps. Let me know if I can assist you further.