What is the interpretation of the repetition of insults and curses, concurrently with the mention of Allah, His Messenger, and the Companions, and is it a result of asceticism and religiosity, vitamin deficiency, or satanic whispering?

We advise you to increase your remembrance of Allah Almighty and seek refuge from the accursed Satan, for by the remembrance of Allah do hearts find tranquility. The treatment for depression is to glorify Allah with His praise and prostrate, as stated in His saying, the Almighty: "And We already know that your breast is constrained by what they say. So exalt [Allah] with praise of your Lord and be among those who prostrate." Allah has clarified the times for these treatments in His saying: "And glorify [Allah] with praise of your Lord before the rising of the sun and before its setting; and during periods of the night [also] exalt [Him] and at the ends of the day, that you may be satisfied." The best remedy for obsessive thoughts is to turn away from them and busy oneself with what benefits in this world and the Hereafter. It is also advisable to consult a female doctor, as there might be a physical illness.