Do not use The Shakti Mat or Accessories if you have any of the following conditions:Coagulation issues, or if you are using anticoagulant medication. The Shakti Mat can affect circulation and therefore can not be recommended to people with circulation and/or clotting issues.Epilepsy - The Shakti Mat is covered in thousands of sharp spikes, making it hazardous if a person were to have a seizure while using the Mat.Significant skin damage in the area of use, including pronounced skin inflammation, or large papilloma's. Skin conditions are at risk of being aggravated by The Shakti Mat.Neuropathy that has resulted in loss of sensation or sensory impairment, as this may impact a users ability to feel the sharpness of the spikes.Pregnancy acupressure points are used in some cases to naturally induce labor (see previous FAQ).Cardiovascular conditions The Shakti Mat can affect circulation and therefore can not be recommended to people with cardiovascular conditions.Thrombophlebitis- see coagulation issues, and cardiovascular conditions above.Fever or other acute illnessIf you have any other medical condition or disease, we recommend you consult your physician before using this product. If you are, or are planning to become pregnant, consult your physician prior to use..