| Thematic issues | Reference number of each reviewed article |
| Symptoms | [5, 16–22] [5, 16, 18, 23–25] | Embarrassing visible physical symptoms | Progressive loss of functionality and autonomy |
| Relational and communication problems | [5, 19, 26, 27] [5, 24] | Oral language (dysphonia, dysarthria) | Body language (facial mask) |
| Perceptions exchange | | The others towards the patient | [5, 16, 21, 23, 24, 26] [5, 16, 28] | Beliefs on physical and mental status | PD as an illness for old people only | Patient towards the others | [5, 26, 27], [5, 16, 18, 24–26] | Not being understood and taken seriously | Being a family burden |
| Caregivers | [24, 25, 28] | Embarrassment and withdrawal due to their lover’s condition |
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