Toenails are too thick, you need to understand the cause, physiological factors caused by the toenail is too thick, can be appropriate for polishing and trimming. Pathological factors caused by too thick toenails, but also for the primary disease treatment. 1. Physiological factors: with the gradual growth of some of the elderly, because of the inconvenience of cutting toenails, toenail metamorphosis led to nail thickening. The above factors are physiological factors, it is recommended to go to the pedicure store for proper trimming, can help improve. 2. Pathological factors: for example, gray nails caused by fungal infections can also lead to thickening of toenails and color changes. Appropriate topical medications, such as amorolfine application, need to be given under doctor’s supervision. If necessary, take oral itraconazole capsules, terbinafine tablets, and other antifungal drugs for treatment. The purple toenails are considered to be related to the above factors, it is recommended not to blindly use medication, need to clarify the cause first, then treat the cause of the disease.