Nonprescription treatments for headache prevention were recommended for treatment of 53 concussions (40%) for patients with PTH-M and 21 concussions (37%) for patients in the PTH-NM group; specific treatments included melatonin (PTH-M, 41 concussions [31%] vs PTH-NM, 14 [25%]), magnesium (PTH-M, 36 concussions [27%] vs PTH-NM, 15 [26%]), riboflavin (PTH-M, 33 concussions [25%] vs PTH-NM, 13 [23%]), butterbur (PTH-M, 11 concussions [8%] vs PTH-NM, 5 [9%]) (eTable 4 in the Supplement). The gene discussed is PTH; the disease is Headache.