What causes weakness and nose bleed after having flu?
Patient: Hi there. I was feeling really run down for a few weeks and then I had a flu (proper flu). Was hoping that would be the end of it, but two weeks after the bout of flu I still feel really exhausted - so haven t been back to the gym. I kinda feel like only half my heart and lungs are working - ie quite weak. My voice also sounds tired. Feel worn out and depressed and head feels like it could explode (although don t have headache as such). Have had a runny nose the past couple of days and noticed blood in my mucus - and have just had a nose bleed. Any advice? Doctor: Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice.  Upper respiratory tract viral infection (flu) can cause bronchitis (inflammation of airways) and pneumonia (lung infection). And these can cause hemoptysis (blood in sputum). So get done chest X-ray and PFT (Pulmonary Function Test). Chest X-ray is needed to rule out lung infection. PFT is must for the diagnosis of bronchitis. You may need antibiotic and inhaled bronchodilators based on the reports.   Don't worry, you will be alright with all these.   Hope I have solved your query. I will be happy to help you further.   Wish you good health!   Thanks.