After scoring the opening goal, the Liverpool star clashed heads with the opposing goalkeeper as Senegal beat the Cape Verde Islands in Tuesday's last-16 clash in Bafoussam and was forced to leave the field, looking groggy and with swelling on the side of his face.
He underwent examinations that showed no trace of concussion, said Senegal's doctor Abdourahmane Fédior.
"All the symptoms he had on the pitch are gone. His condition requires fairly close monitoring. Everything is normal on the X-ray," the doctor said in a statement released by the Senegalese federation.
Mane, The reigning African Footballer of the Year, posted a picture of himself on social media with the caption "recovering".
He is a major part of Senegal's hopes of winning their first continental championship in Cameroon. They were among the pre-tournament favourites but although they have reached the last eight, they have so far looked far from convincing.
