Thanks for posting your query.
Do you have red color itchy patch in affected skin lesion or black color blood?
History of bronchitis
with red itchy patches suggest the diagnosis of urticaria.
Exact diagnosis can be made only after examination.
You should consult with dermatologist
and should go for exact diagnosis.
If urticaria then treatment of bronchitis with anti-histaminics may give you relief.
You should get treatment for bronchitis .
If blood is present then you should go for clotting time, bleeding time
and prothrombin time
Dr. Mayank Bhargava