Is it obligatory to make up prayers that were missed due to obsessive compulsive disorder (waswas) leading to the abandonment of prayer for scattered days?

The questioner must distance themselves from the causes of waswas (obsessive whispering/thoughts) and maintain the obligatory acts of worship (fara'id), especially prayer (salat). This is aided by complete purification (taharah (definition)), the morning and evening adhkar (remembrances of Allah), and reciting Surahs Al-Ikhlas (definition) and Al-Mu'awwidhatayn (Al-Falaq and An-Nas). They must also make up for any missed prayers, whether due to waswas or other reasons, and these must be performed in order. Prayer is a matter of great importance; it is the second pillar of Islam after the two declarations of faith (shahadatayn). Abandoning it is the greatest sin after disbelief (kufr). Some scholars have considered one who abandons prayer out of laziness to be a disbeliever, a disbelief that expels one from the fold of Islam.