Reasons for swollen lips :-
Crohn's disease may lead to lip swelling.
Chromosome 7p duplication syndrome
dysplasia ectodermal, hypohidrotic, autosomal recessive
Lip inflammation in eczema and psoriasis
Lip swelling as in glucagonoma
Hereditary angioedema-
Stomatitis in herpes
Hives - lip swelling
Melkersson-Rosenthal syndrome - lip swelling
Mucopolysaccharidosis II enlarged lips
Myxedema - swollen lips
trauma heat and cold effects .
Trauma
answered by D M K