Small bumps on the hands do not hurt, itchy, this situation may be the site of a certain allergic reaction, and some allergic reactions do not have obvious self-conscious symptoms. For example, contact dermatitis or drug contact dermatitis due to the use of drugs, such as local trauma and the use of some topical ointment, so that after the external paste, will produce a certain allergic contact dermatitis. Of course, it is possible that the site of a certain infection, this infection is generally common in some viral infections, such as infection with human papillomavirus, and caused by local skin flat warts, and this wart-like growths, usually flat to form small bumps this symptom performance.