Dear Welcome to HCM We understand your concerns I went through your description. I suggest you advice your brother not to worry much. The description you gave may not be enough for a conclusion. From general point of view, there could a problem based on erectile dysfunction. The problem could be either psychological or physiological. To determine that we need to find the mental and physical condition of your brother. There could be some other questions also like regarding masturbation, anxiety about sexual intercourse etc. If it is psychological, counseling sessions should work well. I can help you in that aspect. Contact me through customer care at www.healthcaremagic.com. Hope this answers your query. Available for further clarifications. Good luck.