by Anne Marie Helmenstine, Ph.D. Updated June 13, 2014. Definition: A molecular orbital is an orbital or wavefunction of a molecule's electron. Electrons around a molecule can be associated with more than one atom and are often expressed as a combination of atomic orbitals.
Hereditary angioedema is a disorder characterized by recurrent episodes of severe swelling (angioedema). The most common areas of the body to develop swelling are the limbs, face, intestinal tract, and airway. Minor trauma or stress may trigger an attack, but swelling often occurs without a known trigger.
The list of signs and symptoms mentioned in various sources for Hereditary angioedema includes the 15 symptoms listed below: Swelling. Swelling of back of hands. Foot swelling. Eyelid swelling. Lip swelling. Genital swelling. Swelling of respiratory tract lining.