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9. Greasy or Yellow Skin

Within the skin are many small sebaceous glands that release an oil called sebum, which causes skin and hair to become oily. Seborrheic-like psoriasis occurs in areas with higher sebum production, like the forehead, scalp, nose, chest, and skin folds. The lesions manifest as red plaques with extremely greasy or yellow scales as dead cells mix with the excess sebum. In more severe cases, this type of psoriasis may cause scaly pimples.

sebaceous gland model ericsphotography / Getty Images

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This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.