A tingling sensation in the breasts is mostly caused by inappropriate clothing, diseases of the breasts themselves and chest diseases. 1. Inappropriate clothing, if healthy people choose inappropriate underwear or outer clothing, material or size does not meet their own situation, it is possible to squeeze the breasts resulting in a tingling sensation. 2. Diseases of the breast itself, if you suffer from breast hyperplasia, breast cysts, breast nodules, localized inflammation of the breast and other diseases, you may experience numbness and other discomforts. 3. Other diseases of the breasts, such as allergies, inflammation of the internal intercostal nerve, joint muscle strain and other diseases, can also lead to this kind of discomfort. It is recommended that patients with breast paresthesia should consult a regular hospital in a timely manner, and be treated under the guidance of a doctor after a relevant examination at night.