Add spaces: Intheirstruggleforperfection,theyfoundthesoundpressuretobesimplynotenough.

Answer: In their struggle for perfection, they found the sound pressure to be simply not enough.

Add spaces: Itrequiresimmediatemedicalexaminationandqualifiedmedicalcare.

Answer: It requires immediate medical examination and qualified medical care.

Add spaces: Ofcourse,peoplediffergreatlyintheirreactiontosunlight.

Answer:
Of course, people differ greatly in their reaction to sunlight.