Fungi will often cause the area around the nail to become red and irritated. Initially a fungus will take hold at the base or edges of the nail. Once the infection continues to spread you'll notice changes in your nail and nail bed. You may experience mild discomfort, itching, or perhaps even sharp pain around the cuticle which is the skin surrounding the nail. Bleeding may begin to occur and often detachment from the cuticle to the nail may result. The nail will begin a slow transformation to perhaps a yellow, brown, or white coloration. Nails will often become thicker and extremely brittle. You may experience discomfort when you put weight on any fungal infected nail.
The castor seed contains ricin , a toxic protein. Heating during the oil extraction process denatures and deactivates the protein. However, harvesting castor beans may not be without risk.  Allergenic compounds found on the plant surface can cause permanent nerve damage, making the harvest of castor beans a human health risk. India, Brazil, and China are the major crop producers, and the workers suffer harmful side effects from working with these plants.  These health issues, in addition to concerns about the toxic byproduct (ricin) from castor oil production, have encouraged the quest for alternative sources for hydroxy fatty acids.   Alternatively, some researchers are trying to genetically modify the castor plant to prevent the synthesis of ricin. 
This information should not be used to decide whether or not to take Athlete’s Foot Maximum Strength or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to Athlete’s Foot Maximum Strength. This information is not specific medical advice and does not replace information you receive from the healthcare provider. You must talk with the healthcare provider for complete information about the risks and benefits of using this medicine.