Yes. If you read the CRB, this will not be indicated at all. You'd think Medicine is just one skill out of many. You'd think the Heal spell is just one spell out of many.You will want at least one player with Battle Medicine, and one player with access to Healing magic
But in reality the CRB should have said "if you opt to play a party without both these options, you'll be playing the game on Nightmare mode".
You could argue all of the low level spells are trap options*... compared to instead playing a second fighter (or somesuch), that is.For spellcasters there is a ton of trap options, especially at low levels.
*) except Heal of course