Contraindications to Treatment Contraindications and precautions include: keloid or raised scarring; history of eczema, psoriasis, actinic (solar) keratosis, herpes simplex infections, diabetes, and other chronic conditions; presence of raised moles, warts or any raised lesions in the target area. Absolute contraindications include: scleroderma, collagen vascular diseases or cardiac abnormalities; rosacea or blood clotting problems; active bacterial or fungal infections; immuno-suppression; scars less than 6 months old; and facial fillers used in the past 2 - 4 weeks. Treatment is not recommended for patients who are pregnant or nursing.