However, the PDF download contains all 64 up-to-date. Eventually, all of them will appear together in just one post. Right now, I'm doing them gradually because it ends up being close to 180 if you include the 20-something perakim within Chapter 119.
For the first 20, please see HERE (or press the button below to download all 64 on 1 page).
For Tehillim/Psalms ailment list, please see HERE.
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22 -- for every kind of trouble (tzaar)
23 -- to ask a question via a dream (she'alat chalom)
24 -- to be rescued from a flood of water
25 -- for every thing
26 -- for trouble and danger
27 -- for wild/dangerous animals
28 -- for prayer
29 -- for an evil spirit/dark mood
30 -- for every bad thing
31 -- for an evil eye (ayin hara)
32 -- to request mercy/compassion (rachamim)
33 -- for a woman whose children have died, may Hashem have mercy
34 -- to go on one's way (i.e. a journey, traveling)
35 -- if adversaries have risen up against you
36 -- to annihilate the evil ones
37 -- for a drunkard
38 -- if one has given you bad advice
39 -- for one who is fasting
40 -- to be rescued from an evil spirit/dark mood
41 -- if you have been fired from your employment
42 -- to build the Beit Hamikdash
43 -- to build the Beit Hamikdash
44 -- to be saved from the hand of an enemy
45 -- for one who has an evil wife (presumably, one could say this for an evil husband too)
46 -- if a person hates his wife (ditto)
47 -- for repentance (teshuvah)
48 -- so that one's haters will be afraid of him
49 -- for a kedachat (a type of fever, malaria)
50 -- to be saved from bandits
51 -- for one who is defiled with znut
52 -- to prevent one from speaking lashon hara
53 -- to frighten your haters
54 -- to take revenge on your enemies
55 -- for all evil
56 -- to one who is imprisoned in chains (presumably, this includes handcuffs, etc.)
57 -- for success
58 -- for a bad dog
59 -- for the evil inclination (l'yetzer hara)
60 -- for one who is going to war
61 -- if you fear to sit at home
62 -- to be said after Mincha and after Maariv
63 -- to succeed in trade, merchandise
64 -- to cross a river