In Boenninghausen's Therapeutic Pocket Book (TPB), the rubric "Convulsions with Consciousness" is found under the chapter titled Sensations. This chapter includes general pathological states, sensations, and conditions that affect the whole organism or are not strictly localized. Convulsions, especially when consciousness is retained, are considered a significant general symptom that falls under this broader category of sensations and general morbid states experienced by the patient.
The other options are less likely:
\begin{itemize}
\item External head and Internal head would primarily deal with symptoms localized to the head.
\item Aggravations would list factors that worsen symptoms, not the symptom itself.
\end{itemize}
Therefore, "Convulsions with Consciousness" is logically placed under the "Sensations" chapter in Boenninghausen's TPB.