- taking anticoagulation medications or antiplatelet drugs (aspirin, acetylsalicylic acid, Sintrom, Acenokumarol, Plavix; Fraxiparyna, Clexane, Heparyna);
- use of pain medication up to 2 days prior to treatment;
- history of severe allergic reactions;
- active inflammation on the planned treatment area;
- active diseases with Koebner’s phenomenon (psoriasis, lichen planus);
- herpes;
- planned significant activity of the patient within 72 hours following treatment;
- unrealistic expectations.