Hi Dear,
Welcome to HCM.
Understanding your concern. As per your query you are wondering if Warfarin cause headaches and fatigue as a side effect . Well there can be many reasons for symptoms you mention in query like sinusitis , diabetes, type 2 , multiple sclerosis , stress reaction ,
tension headache , medication reaction or side-effect , anemia . But in your case the symptoms are probably due to side effects of warfarin.
Consult doctor , who prescribed thsi medicine so that he/she can alter the doe or prescribe substitute . I would suggest you to general practitioner for proper examination without any delay . Doctor may order
blood test , ECG , troponin t test and take history . Doctor may also refer him to
ENT specialist in case of sinusitis related problem . Doctor may order CT scan and examine ear with otoscope . Doctor may prescribe antibiotics like
amoxicillin , along with anti inflammatory. For now take ibuprofen or
acetaminophen for pain , take proper rest , do not exert your body and eat iron rich food like spinach . Doctor may also refer you to cardiologist for
high blood pressure .
Hope your concern has been resolved.
Get Well Soon.
Best Wishes,
Dr. Harry Maheshwari