Can allergies or a cold cause inflammation of the scalp and dandruff?

Im so pissed right now because ive been using the same suppplements since november last year but just recently a month ago i got a fever and it lasted for about two weeks. Its been a month and i still have i dry cough from that fever . Along with that i have a itchy scalp and inflammation. It pisses me off because i want to believe its the dry cough thats causing the scalp itch and dandruff but i cant help but think its one of the supplements im taking which has not really changed for the past 5 months. Anything advice how to get rid of the dry cough would be appreciated. If the air is too cold or to humid in a room i start coughing so not sure if its somehthing different but i my feels normal its just that annoying cough from time to time mostly happens either in the morning time or in the night. Thinking maybe im just gonna drop the supplements and see what happens. List of supplements are in my signature.

Yes, by diverting the immune system's energy to the cold or whatever it is. I'm going to guess, based on my experience, that the tonsils are (or were 10 days ago) infected. If so, I'm not confident that natural treatments could cure that. Of if it's something else - the condition will dictate the treatment.