A search for the Higgs boson in final states with one, two or three isolated photons has been performed based on data taken at LEP 2 by the DELPHI detector. The data analysed correspond to a total integrated luminosity of 67.5 pb$^{-1}$ at centre-of-mass energies of 161 GeV (9.7 pb$^{-1}$), 172 GeV (10.1 pb$^{-1}$) and 183 GeV (47.7 pb$^{-1}$). No evidence for the processes ${\rm e^+ e^- \rightarrow H \gamma}$ with ${\rm H\rightarrow b\bar{b}}$ or $\gamma\gamma$ and ${\rm e^+ e^- \rightarrow Hq\bar{q}}$ with ${\rm H \rightarrow \gamma \gamma}$ was observed. Model-independent limits on ${\rm \sigma (e^+e^-\rightarrow H\gamma)\times BR(H\rightarrow b\bar{b})}$, ${\rm \sigma (e^+e^-\rightarrow Hq\bar{q})\times BR(H\rightarrow \gamma\gamma)}$ and ${\rm \sigma (e^+e^-\rightarrow H\gamma)\times BR(H\rightarrow \gamma\gamma)}$ are set, as well as model-dependent limits on Higgs boson anomalous couplings to vector bosons.

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