With so many symptoms linked with different diseases, it is almost impossible to determine for sure an illness without Diagnosis. From a patient description of symptoms they have, a doctor can have a precise guess of what the problem might be, but not for sure. In recent times, people sought out search engines to check their illness by inputting the symptoms they have. This approach might not always be accurate, though it can be helpful sometimes. When you have chronic catarrh, you tend to experience a headache. This Diagnosis is also a symptom of malaria; it takes correct and professional Diagnosis to differentiate. You are reading an article from the largest and the only NABL accrediated Pathology Lab in Ulhasnagar.