The purpose of the study is to compare different formulations of AZD3355 in regard to possible adverse events such as sensations of numbness, tinglings and heat in the skin.

Inclusion Criteria:

• Provision of written informed consent
• Female subjects with no childbearing potentials or using highly efficient contraceptive methods
• Clinically normal physical findings

Exclusion Criteria:

• Clinically significant illness within 2 weeks prior to the first dose of investigational product
• History of clinically significant disease
• Use of prescribed medication during the 2 weeks before administration of the first dose of investigational product