Are the physical symptoms (trembling limbs, extreme thirst) that occur during Ruqyah, the presence of a huge fatty mass, the daughter's rare illness, in addition to failure at work, constant fear, and dizziness, all interrelated?

We do not have definitive information to interpret what you mentioned, or whether it is interconnected or not. We advise you to perform Ruqyah (Islamic exorcism) according to the Sharia, and to seek help through supplication (dua) which averts divine decree, as the Messenger of Allah, peace and blessings be upon him, said: "Nothing averts divine decree except supplication, and nothing increases one's lifespan except righteousness." Maintain the morning and evening remembrances (adhkar), ask Allah for well-being, and recite Surat Al-Ikhlas and the two Mu'awwidhat (Surat Al-Falaq and Surat An-Nas) three times in the morning and in the evening. Also, repeat "Hasbi Allahu la ilaha illa Huwa, 'alayhi tawakkaltu, wa Huwa Rabbul 'Arshil 'Azim" (Allah is sufficient for me; there is no god but He. Upon Him I have relied, and He is the Lord of the Great Throne) seven times in the morning and in the evening. Be diligent in performing four rak'ahs of prayer at the beginning of the day, and recite the traditional supplications for averting tribulation, such as: "Allahumma Rabban-nas, adhhibil-ba's, washfi Antash-Shafi, la shifa'a illa shifa'uk, shifa'an la yughadiru saqama" (O Allah, Lord of mankind, remove the affliction, and cure me. You are the Healer; there is no healing except Your healing, a healing that leaves no sickness). And the supplication for distress: "La ilaha illallahul-Azimul-Halim, la ilaha illallahu Rabbus-samawati wal-ard wa Rabbul-Arshil-Azim" (There is no god but Allah, the Most Great, the Most Forbearing. There is no god but Allah, Lord of the heavens and the earth, and Lord of the Great Throne).