(SHSL_Only_God_Knows ;) )

Hajime: Identity issues, low self esteem.

Nagito:  Low self esteem, Trauma, Depression, Suicidal tendencies, PTSD, Frontotemporal Dementia, Social anxiety.

Chiaki Nanami: Autism.

Souda: Crippling insecurties, Trust issues.

Gundham: Trauma, Social Anxiety.

Sonia: None.

Hiyoko: Trauma.

Mahiru: I don't know if this counts but Daddy issues.

Mikan: PTSD, Low self esteem, trauma.

Ibuki: ADHD, Trust issues, and, this is just a little headcannon of mine that I wanted to add on even though I didn't put any sort of abuse for anyone else, Childhood neglect, Abandonment issues.

Imposter: Identity issues.

TeruTeru: Fragile masculinity issues, low self esteem, body issues.

Nekomaru Nidai: Trauma

Akane: Trauma.

Fuyuhiko: Trauma, Anger issues.

Peko: PTSD.

Izuru: ADD