- Plaque – most common form, 80-90% of patients with psoriasis
- Inverse – smooth, red, inflamed areas, often confused with “fungus”; usually affects the skin folds such as the underarms, under the breasts, genitals and buttocks
- Guttate – multiple pink, scaly, round patches; presentation is often sudden in onset and commonly associated with a strep infection
- Pustular – raised red pus-filled bumps; can be localized to the hands, feet or both, or rarely affect the entire body
- Nail – can cause yellowing, pitting, lifting, thickening or crumbling of the nail.