Are there any known skin problems that are caused by ultrasound gel?

Yes. Some skin problems that have been linked to ultrasound gel include:

Allergic reactions, including skin rashes and hives

Skin irritation, including redness, swelling, and itching

Itching

Dry skin

Burns, especially if the gel is not removed and the skin is exposed to sunlight or high temperatures

Cellulite, if the gel is not applied correctly and penetrates the skin's deep layers

Eczema

Hives

Pustules

Erythema

Pruritis

Contact dermatitis

Acneiform eruptions