Itchy bumps on the joints of the fingers may be caused by eczema, mosquito bites, ringworm and other diseases, the patient should consult a doctor in a timely manner to clarify the cause of the disease and then carry out the appropriate treatment. 1. eczema: finger joints pimples itchy may be caused by eczema, which is mostly symmetrical distribution, there is a tendency to ooze, the patient before the onset of more contact with pollen and other allergens, you should actively look for and remove the cause of eczema. 2. Mosquito bites: finger joints pimples are very itchy may also be mosquito bites caused by the onset of the onset of the summer, the patient has been to more grass and trees before the onset of the place. 3. ringworm: finger joints pimples very itchy may also be caused by ringworm, the patient will also have flaking, ring-shaped plaque, can be used externally clotrimazole, cyclopyrrolidine and other drugs for treatment. It is recommended that patients go to the hospital in time to find out the cause and follow the doctor’s instructions for treatment. All of the above drugs should be used under the guidance of a doctor, do not self-medication.