There are many possible causes of swelling in the fingers of both hands; local inflammation can cause oedema, often accompanied by local redness, heat and pain.
If the swelling starts in the feet and is followed by swelling of both fingers, cardiogenic oedema should be suspected. If it starts in the eyelids and face and then spreads throughout the body, including swelling of the fingers, nephrogenic oedema should be considered. However, other causes of oedema cannot be ruled out, such as warmth in a hot environment, which leads to vasodilation of the body surface, increased capillary filtration pressure, and interstitial oozing of loose connective tissue under the skin, which can also lead to mild oedema in the hands and feet. A visit to a regular hospital is required to screen for the cause and provide targeted treatment.