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4. Skin Cysts

Multiple types of cysts can form on the skin. For example, epidermoid or sebaceous cysts are filled with keratin, a protein that forms the structure of the skin and typically appears on the face, neck, and trunk.

Pilar cysts, which are also filled with keratin, can form on the scalp. These cysts may progress slowly and remain for years. They may rupture or become infected, though serious complications are rare.

A medical illustration shows a cross-section of skin labeled epidermis, dermis, and hypodermis, featuring a large yellow sebaceous cyst near a hair follicle and sebaceous gland, depicting how these cysts form beneath the skin.

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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.