Wound care and warm beverages:
Vaseline is good, easy to apply and carry. I’ve found that unflavored Chap Stick is better. Its a bit harder to apply but it last a lot longer and creates a better barrier from both outside intrusions and the migration of moisture and oil from your skin. It will quickly relieve the pain of cracked skin, dried out by cold dry air (here in the Northeast) or desert air. On one trip a guest developed a fissure of the sphincter, probably from the common experience of not being able to defficate in a strange place, then finally releasing an larger, harder stool than normal. You may be disgusted or laugh, but its a real thing. The anus is a dangerous area to have an open wound as it is regularly exposed to a high bacterial load. I instructed the guest to mash some Chap Stick between finger and thumb until it was soft, then apply it liberally to the fissure. The fissure healed in a few days. I’ve since recommended that to others which similar results. Anyone who’s experienced a fissure will know how hard it is to keep one clean and heal it.
A warm beverage that is very beneficial is warm water and honey. I’ve not encountered anyone alergic to honey. It has a pleasant taste and lots of calories. If you are dealing with hypothermia, blood loss and other injuries, dehydration is present and must be addressed. The calories will cause the body to warm. It takes a lot of calories to warm a 160lb human who’s core temperature has dropped. I always carry honey packets in a hard container. You can’t carry honey in a squeeze container or one with a small mouth cause honey gets very hard even at 50F, and impossible to squeeze out. The packets are easy to peel open in any temp, but they are fragile hence the hard sided container.
I like to carry an Israeli Bandage because it is the most versatile tool for staunching bleeding and simultaneously pressuring a wound. We use axes in camp, and the young guys (20s) always show up with big sharp knives the purchased for the cool. Cuts are always a problem. Sever cuts could be life threatening and a fool with an axe can put it through a foot in a heartbeat. So can a weary, sleep deprived pro.
Michael’s advice that the most important tool is the knowledge you have is the best advice there is. Where to get it? I don’t think you can achieve an adequate education in wilderness medicine from a book. I’ve got a bunch. The best education is hands on, using the supplies, acting out scenarios where you must think and act under pressure in unexpected circumstances. You can do that at SOLO in New Hampshire – http://www.soloschools.com SOLO teaches regular courses ranging from a three day Wilderness First Aid to a multi week Wilderness EMT. The price is reasonable, and the first time you need what you learn, dirt cheap.
We get used to being in contact with people and emergency services. Our society generally expects there to be help available immediately at the push of a button. We are backpackers and we search out solitude. Don’t expect that cell phone to work when things go wrong. Even if it works, don’t expect help to arrive soon, and if the weather goes to hell, maybe not in time.