Abdominal rigidity is stiffness of the muscles in the belly area, which can be felt when touched or pressed.
Rigidity of the abdomen
When there is a sore area inside the belly or abdomen, the pain will get worse when a hand presses against muscles of the abdomen.
Your fear or nervousness about being touched (palpated) may cause this symptom, but there should be no pain.
If you have pain when you are touched and you tighten the muscles to "guard" against more pain, it is more likely caused by a physical condition inside your body. The condition may affect one or both sides of your body.
Involuntary abdominal rigidity should always be evaluated by your health care provider.
Call your health care provider if
All forms of involuntary rigidity and rebound tenderness (pain when the abdomen is gently pressed and then the pressure is released) need immediate medical attention, preferably in an emergency room. You may need surgery.
What to expect at your health care provider's office
You will probably be seen in an emergency room instead of at your doctor's office.
The health care providerwill perform a physical examination. The physical examination may include a pelvic (and possibly a rectal) examination.
The health care provider will ask questions about your symptoms, such as:
When did they first start?
What other symptoms do you have at the same time? For example, do you have abdominal pain?
Linda Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.