Feeling like bug bites on the legs may be caused by urticaria, psychological factors, restless leg syndrome and other reasons. 1. Urticaria: Urticaria is an allergic disease characterized by hives, which is a limited edema of the skin mucosa due to increased vascular permeability, manifested as a rash of varying sizes of hives, accompanied by itching of the skin, which can feel like bug bites on the legs. 2. Psychological factors: such as anxiety, nervousness, autonomic disorders, depression, etc., can lead to the feeling of bug bites on the legs. 3. Restless legs syndrome: restless legs syndrome is a common neurological sensory-motor disorder, mainly involving the legs, manifested in the resting state, both lower limbs with extreme discomfort, can feel like bug bites on the legs. Feeling like bug bites on the legs affects your life suggests timely hospitalization, clarification of the cause of the disease, and active treatment under the guidance of the doctor.