Small bumps and itchy arm joints may be caused by insect bite dermatitis, eczema, folliculitis and other factors.
1. Insect bite dermatitis: when the arm joints, by mosquitoes, ants and other insects bite, mosquitoes and ants will be injected in the local saliva, these saliva contains a large number of heterogeneous proteins, will stimulate the body’s immune system, resulting in the local vascular permeability enhancement, which triggered arm joints with small bumps, accompanied by itching symptoms.
2. Eczema: If the patient is often in a hot and humid environment, it will lead to sweat stimulation of the local skin, thus triggering the symptoms of eczema, so that the patient appeared in the arm joints of the goosebumps, accompanied by symptoms of itching.
3. Folliculitis: If you don’t pay attention to local hygiene, it will lead to localized growth of bacteria in the arm joints, which will stimulate the local hair follicles and the surrounding tissues to produce an inflammatory reaction, resulting in small bumps in the arm joints, accompanied by itching.
When the arm joints with small bumps and itchy, it is recommended to go to the hospital in time, clear the cause of the disease, under the guidance of the doctor targeted treatment.