shingles can have systemic (whole body) effects like fatigue headache malaise etc. but it would be uncommon for shingles to directly cause a sore throat nasal congestion and coughing. my guess (and it is only a guess) is that your symptoms are coincidental. there are no rules in medicine that state a person can only have one health issue/problem at time or that all current symptoms are related to just one cause.
can shingles cause respiratory disease. i have been diagnosed with shingles and now have a sore throat nasal congestion and coughing. are they related or coincidental?