My brother has a cough. when he spill there a blood in his plemgh?

Immediate evaluation: Your brother should be evaluated immediately for the cause of this cough & blood in his phlegm. Presence of blood in phlegm usually signifies significant injury to airway walls &/or blood vessels & could be due a wide variety of causes (ranging from acute & chronic infections, vasculitis, malignancy etc.). Evaluation by his doctor & some tests can help clarify the cause & guide treatment. Go now!