I have a lump on my wrist ivet researched it and i think it is ganglion cyst its only small. aparently you can hit it and i will go down? is this true

Hitting cysts: if you hit it you will only succeed in fracturing your wrist which is not advisable at all. You may also burst the sac of the cyst and flatten it by getting the liquid out but it will seal itself eventually and fill up again because it is connected to the wrist joint underneath and that is full of liquid and will help replenish that sac. Best way to get rid of it is unfortunately surgery.