Yes. These include, but are not limited to:
- Mental health concerns, especially if you are considering harming yourself or taking your own life
- Skin problems
- Pregnancy and post-natal concerns
- Recent surgery
- If your immune system is significantly weak (i.e., due to taking specific medications or an underlying condition)
- Known or possible HIV or AIDS
- Active Tuberculosis
- Fever after travel outside of Europe or North America
- New or rapidly changing rashes