In Zoroastrian tradition particular prayers are suggested for specific purposes. Some suggestions come from the Revayats, some from the prayers themselves and some from oral traditions. Here is a collection of the same.)

Prayers related to Health.

Health issue                            Prayer

Age related issues       Hom Yasht

Backache                     Tir Yasht, Moti Haptan Yasht

Brain related               Māh Bakhtār Nyāsh

Chest Pain                   Āvã Nyāsh, Āvã Yasht, Ardibehesht Yasht

Child birth                   Āvã Nyāsh, Āvã Yasht

Ear ache                      Gosh Yasht, Ardibahesht Yasht

Eye trouble                  Khorshed & Meher Nyāsh, Tir yasht

Fever                           Ardibehesht Yasht, Behrãm Yasht, Vanant Yasht

Headache                    Ātash Nyāsh, Ardibehesht Yasht, Hom Yasht, Behrãm Yasht

Health (over all)          Ardibehesht Yasht, Hom Yasht

Heart problems            Āvã Nyāsh, Āvã Yasht, Hom Yasht

Terminal diseases        Hormazd Yasht

Lactation                     Āvã Nyāsh, Āvã Yasht,

Legs                            Ardibehesht Yasht, Hom Yasht

Menstrual problems     Tir Yasht (when not in periods)

Nail problems              Sirozā Yasht

Neck pain                    Hoshbām, Rãm Yasht

Nose                            Māh Bakhtār Nyāsh, Ardibehesht Yasht

Poisoning                    Hom Yasht

Pregnancy problems    Farvardin Yasht, Āshtād Yasht

Reproductive organs   Āvã Nyāsh, Āvã Yasht

Stomach ache              Ardibehesht Yasht, Ātash Nyāsh

Surgery                        Māh Bakhtār Nyāsh

Urinary trouble            Āvã Nyāsh, Āvã Yasht

Wound healing            Māh Bakhtār Nyāsh, Hom Yasht

General purposes

Purpose                                       Prayer

Positive thoughts                    Hormazd Yasht

Black magic (to ward off)      Hom Yasht & Vanant Yasht

Employment                            Khordād Yasht

Intelligence                             Khorshed & Meher Nyāsh,

Marriage partner                      Rãm Yasht, Ā Airyema ishyo prayer

Marital peace                           Rãm Yasht, Ā Airyema ishyo prayer

Mental peace                           Māh Bakhtār Nyāsh

Progeny                                   Ātash Nyāsh, Hom Yasht

Spiritual development             Hoshbām, Sarosh Yasht Hādokht, Din Yasht, Vahishtoisht Gāthā

Success/Victory                      Behrãm Yasht

Studies, skills                          Din Yasht

Astrology

Moti Haptan Yasht is to be recited for overall astrological benefits of increasing positive influence of good planets/stars and decreasing negative influence of negative planets/stars.                

To increase the positive influence of:

Sun                  Khorshed Nyāsh and Khorshed Yasht

Venus              Tir Yasht

Jupiter             Hormazd Yasht

Mercury           Khordad Yasht, Tir Yasht,

Moon               Māh Bakhtār Nyāsh

To reduce negative influence of:

Mars                                        Behrãm Yasht

Saturn                                      Āvã Yasht, Hom Yasht

Rahu & Ketu                           Hom Yasht, Haptan Yasht