UNRWA has issued a useful infographic and update on the situation of Palestinian refugees in Syria:
In February 2015, Yarmouk and its surrounding areas continue to experience high levels of armed violence, which prevented distribution of humanitarian assistance by UNRWA. The Agency has not been able to complete a successful distribution since 6 December 2014. In addition, UNRWA has been unable to operate its temporary health point or provide residents with clean water and basic non-food items. The Agency continues to advocate for full, safe and uninterrupted access to Yarmouk and other areas that remain hard to reach or fully inaccessible. On 9 February, the Agency was able to visit Husseiniyeh for the first time in over 18 months. The visit constitutes an important first step in restoring UNRWA services, rehabilitating UNRWA facilities and in making the area habitable for returning civilians.
You’ll find the original pdf here.