Hi there, Thanks for your query. Cold compresses, along with NSAIDs, such as ibuprofen+paracetamol; and, cleaning of the bruises with an antiseptic lotion would suffice for the time being. The bump- due to mild concussion- will disappear in 5-7 days time. However, if your dad develops unusual symptoms in the following days, consult a doctor, who will order MRI Brain to rule out internal/brain injury. If you find my response helpful and informative, do not forget an “excellent” (5-star rating) to my answer, to ENCOURAGE ALL doctors- engaged in social service- to render sound advice to the FREE queries. Take care Dr. Rakesh Karanwal