For some reason I am unable to complete the Restoring Hope quest.

When I go to diagnose the patients nothing happens. I continually hit E (the notification appears on my screen E) Diagnose Patient) and nothing happens. Not even the familiar clicking noise when you hit E on nothing.

My Medicine is at 53 and I passed the check with the Doctor (level 20 Medicine) to start that part of the quest.

Anyone else have this problem?

Anyone?

I did it just a hour or two ago, so it should work. Have you been playing around in console, perhaps you broke something?
Other than that, try reloading an earlier save or quicktraveling to the same area so it reloads it.

I am having the same problem with Restoring Hope. It is possible to skip that part by talking to the doctor, but I'd rather not. Any fix for this? Do I just need higher Medicine?

Nope. Haven't done anything in the console at all.

Already have tried reloading an earlier save and have been back and forth several times by quick travel.

I'm also having a problem with this quest, although at a different stage.

After doing everything I was supposed to do in Nelson, I was told to go back to major Polatli, but the problem is, I can't talk to him about the quest any more. There is simply no such option when I talk to him and therefore I'm unable to finish this quest.

http://img51.imageshack.us/img51/9167/screenshot0k.jpg
http://img688.imageshack.us/img688/5045/screenshot1nx.jpg

Is there something I've missed or is there a way to use the console to make the game think I've finished the quest?

I'm having the same freaking issue. I stormed Nelson with three soldiers, among them a sergeant, and took the village. After that the sergeant is happy that I helped them and the PIP shows that I should go back to Polatli. No dialogue option to finish the quest, even though people standing near his tent are joyful that Nelson had been retaken. How disheartening.

I also don't have a save to re-do it.

I chose the option to attack via the ridge. I knew I should have chosen the other one. Too late now. Btw. one of the soliders died during the attack (not the sergeant). They also didn't follow into the building with the leader so I assumed I had to finish him and his two lackeys myself. The soldiers stopped next to their crossed camerades. I freed them after dealing with the leader. After that I headed back to Polatli and no dialogue was offered to finish the mission.

Sequence:
took the mission
met up with the sergeant and his two guys
chosen the ridge
ran after the soldiers running towards Nelson
killed everyone along the way
reached the middle of the town with the crossed NCRs (that's where one of the soldiers died)
killed off everyone attacking us
entered the building
had a conversation with the leader (what are you going to do about it)
killed the bastard
killed his lackeys
spoke to the sergeant (no dialogue)
cut off the guys on the crosses
headed back to Polatli
no dialogue (PIP indicates mission should be completed by talking to Polatli though)

I think I took all the kills although I'm not entirely sure.

I did everything pretty much the same, except I took the other option, attacking from the north.

Bump for justice. Same thing here, can not finish the quest. Chosen the ridge. But instead of running with everyone I've just sniped enemies from over the rock (one shot sneak kill all the way). Then I came down, untied the crossed hostages and killed the legion leader.

sorry I didn't have any problems doing that quest.