Harlequin Ichthyosis—Skin Conditions

Also called: Cutaneous disorders, Dermatologic disorders

Your skin is your body’s largest organ. It covers and protects your body. Your skin

• Holds body fluids in, preventing dehydration
• Keeps harmful microbes out, preventing infections
• Helps you feel things like heat, cold, and pain
• Keeps your body temperature even
• Makes vitamin D when the sun shines on it

Anything that irritates, clogs, or inflames your skin can cause symptoms such as redness, swelling, burning, and itching. Allergies, irritants, your genetic makeup, and certain diseases and immune system problems can cause rashes, hives, and other skin conditions. Many skin problems, such as acne, also affect your appearance.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases

• Acrodermatitis (Medical Encyclopedia)
• Cryotherapy (Medical Encyclopedia)
• Cutaneous skin tags (Medical Encyclopedia)
• Dry skin — self-care (Medical Encyclopedia)
• Erythema multiforme (Medical Encyclopedia)
• Granuloma annulare (Medical Encyclopedia)
• Keratosis pilaris (Medical Encyclopedia)
• Lichen planus (Medical Encyclopedia)
• Milia (Medical Encyclopedia)
• Sebaceous cyst (Medical Encyclopedia)
• Seborrheic keratosis (Medical Encyclopedia)
• Skin lesion removal (Medical Encyclopedia)
• Skin lesion removal-aftercare (Medical Encyclopedia)
• Stasis dermatitis and ulcers (Medical Encyclopedia)

Harlequin ichthyosis is a severe genetic disorder that mainly affects the skin. Infants with this condition are born with very hard, thick skin covering most of their bodies. The skin forms large, diamond-shaped plates that are separated by deep cracks (fissures). These skin abnormalities affect the shape of the eyelids, nose, mouth, and ears, and limit movement of the arms and legs. Restricted movement of the chest can lead to breathing difficulties and respiratory failure.The skin normally forms a protective barrier between the body and its surrounding environment. The skin abnormalities associated with harlequin ichthyosis disrupt this barrier, making it more difficult for affected infants to control water loss, regulate their body temperature, and fight infections. Infants with harlequin ichthyosis often experience an excessive loss of fluids (dehydration) and develop life-threatening infections in the first few weeks of life. It used to be very rare for affected infants to survive the newborn period. However, with intensive medical support and improved treatment, people with this disorder now have a better chance of living into childhood and adolescence.