Hussain Mohammed Al-Zahrani volunteered to assist patients recovering from drug addiction at Al-Amal Hospital, one of the leading rehabilitation centers in Saudi Arabia. His responsibilities included providing emotional support, engaging patients in therapeutic care activities, and helping them reintegrate into society through structured recovery programs. This experience reflects his commitment to mental health and social care, complementing his professional background in social work and patient rehabilitation. The voluntary work was carried out during his involvement in healthcare and social services (likely between 2019–2021, aligning with his Ministry of Health and Aftercare roles).

Hussain Mohammed Al-Zahrani volunteered during the COVID-19 crisis to support families of infected patients. His role included providing emotional support, coordinating logistical needs, and assisting with healthcare communication to reduce stress and ensure continuity of care. This initiative highlighted his empathy and crisis-management skills while addressing the challenges faced by families during lockdowns and medical isolation. This service was part of his broader contribution to community health during the pandemic (around 2020–2021).