Paraneoplastic scleroderma: a patient with a history of breast cancer presenting with sclerodactyly and Raynaud's phenomenon.

A woman in her 70s with a past history of breast cancer in remission presented with several months of dyspnoea, skin tightness and Raynaud's phenomenon. Physical examination was significant for hypertension, hypoxaemia, sclerodactyly, diffuse crackles on auscultation and mild respiratory distress. Work-up revealed elevated serum creatinine, elevated right ventricular systolic pressure on echocardiography and nuclear bone scan findings of osseous metastatic disease.

Susceptibility to traumatic stress sensitizes the dopaminergic response to cocaine and increases motivation for cocaine.

Patients with post-traumatic stress disorder have a heightened vulnerability to developing substance use disorders; however, the biological underpinnings of this vulnerability remain unresolved. We used the predator odor stress model of post-traumatic stress disorder with segregation of subjects as susceptible or resilient based on elevated plus maze behavior and context avoidance. We then determined behavioral and neurochemical differences across susceptible, resilient, and control populations using a panel of behavioral and neurochemical assays.