I would recommend a dermatologist. I have a good friend with Alopecia Universalis. This is total loss of all hair, head and body. There are different levels of this, Alopecia Areata is hair loss in patches.
Alopecia Areata is much more common than Universalis and severity and duration varies. I know a person who had the Areata type and had patchy loss for a short while and it grew back. It is autoimmune related and can be brought on by extreme emotional stress. If i recall correctly. The Universalis is permanent.
If you have hair loss that is male pattern baldness I am going to speculate that it would fall out in a pattern, and not in patches of any kind nor in any volume at a time. From the looks of your last picture with patch loss right above the ear I would see a dermatologist. I believe even the most severe MPB leaves hair in that region.
Keep us posted and I hope this helps.
Brad