The mechanism of the human immune system has it normally fighting in an infection (like Candida). Initially Th17 cells are made by the immune system, which in turn produces interleukin-17 (IL-17). Inflammation is induced and white blood cells confront infection.<unk>  mutations affect IL-17 by inhibiting its pathway. This in turn affects the human immune systems ability to fight infection, in total there are 9 possible types of this condition.
Chronic mucocutaneous candidiasis
Oral manifestations of systemic disease
Persistent edema of rosacea
Localized lichen myxedematosus
Disseminate and recurrent infundibulofolliculitis
Oral florid papillomatosis
Recurrent toxin-mediated perineal erythema
Chronic undermining burrowing ulcer