The limb is deprived of oxygen-rich blood, which causes deep, cramping muscle pain. Signs of a Blood Clot in the Arm 3. Blue or Red Skin in One Limb A blood clot within an extremity vein can cause the ...

While it’s well-known that issues like high blood pressure, diabetes, smoking and not enough exercise are risk factors for a heart attack, many people may not know the early signs to tell if a cardiac ...