shortness of breath, post-covid syndrome. man with dyspnea, difficulty breathing after coronavirus,

dyspnea lungs chronic breathlessness respiratory wheeze disorder ill overload diagnose painful healthcare inhale patient suffer fatigue unwell tiredness weakness breathe sickness asthmatic sad frustrated cartoon male guy man exhaustion break influenza medicine tired breathing syndrome lassitude palpitations symptom isolated coronavirus disease weariness flat virus caucasian character unhealthy