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 ...