OCD-Etiology & Symptoms
The etiology of OCD is:
- Serotonin dysregulation [Less evidence for Noradrenergic system]
- Cortico-striatal-thalamic-cortical circulatory path
- Prefrontal Cortex -> Striatum -> Thalamus -> Prefrontal Cortex
Symptom patterns:
- Contamination-Washing behavior
- Pathological doubt-Compulsion of checking
- Intrusive thoughts-Intrusive Thoughts [sexual & aggressive] without an observable compulsion
- Symmetry-Need for Symmetry and precision. Compulsion of slowness


