Hello and welcome to HCM, I will address your problem separately. Palpitations and bluish discoloration of nails suggests a cardiac problem. Bluish discoloration suggests reduced oxygen supply to the peripheries which is in turn due to reduced blood supply. A primary cardiac disease prevents the heart to pump adequate blood. Thus, I would suggest you to consult a cardiologist for examination of the cardiovascular system. The second problem that you have mentioned- stomach ache can be due to infection, indigestion or gastritis. Infection is usually preceded by consumption of outside food or stale food. Indigestion is preceded by consumption of heavy meals high in spices and fats. Hair loss is common with dandruff. Thus control of dandruff will reduce the hair fall. Numbness of hands and feet are non-specific symptoms. Cold, nerve disease, diabetes mellitus are common causes of numbness of hands and feet. Sensation of blood running in your throat suggests that some fluid is running in the throat. This feeling is experienced due to post-nasal drip in chronic sinusitis. Consult your primary healthcare provider for clinical examination, investigations and hence management of all the problems. Thanks and take care Dr Shailja P Wahal