Mygale lasiodora
Avicularia avicularia (or Acanthoscurria, tarantula spp.) · M. avicularis, Aranea avicularis, Mygale, Cuban spider. · Animal
Mygale las. is best suited to people who are restless, anxious, fearful, and delirious. They may talk deliriously about work, fear death, and have a high sex drive.
The remedy is generally prescribed for twitching, convulsive movements, possibly accompanied by nausea, dimmed vision, and heart palpitations. It is also used for chorea, especially when this affects the muscles of the upper body, including the face. The tongue is so dry that words may seem to be “jerked” out on speaking. During sleep there may be restlessness, ridiculous dreams, and grinding of teeth.
Key symptoms
- Chorea with constant involuntary movements of arms and legs
- Twitching of facial muscles; mouth and eyes open in rapid succession
- Limbs drag while walking; unsteady gait
- Head jerked to one side; grating of teeth at night
- Tongue dry and parched; put out with difficulty
- Better during sleep; worse in morning
Worse (aggravation)
Better (amelioration)

Black Cuban Spider
Weakness, palpitation, nervousness, fear, like other spider preparations. Chorea is the principal therapeutic field of this. Sexual symptoms are important.
Mind
Delirious, restless, sad; fears death; despondent.
Face
Twitching of facial muscles. Mouth and eyes open in rapid succession. Hot and flushed. Tongue dry and parched; put out with difficulty. Head jerked to one side. Grating of teeth at night.
Stomach
Nausea, with dim sight. Aversion to food. Excessive thirst.
Male
Violent erections. Chordee (Kali brom; Camph).
Extremities
Unsteady gait. Constant motion of whole body. Tremulous. Intense redness in streaks, following course of lymphatics. Twitching of limbs. Restless hands. Convulsive, uncontrollable movements of arms and legs. Limbs drag while walking.
Relationship
Compare: Agar; Tarant; Cupr, Zizia.
Modalities
Better, during sleep. Worse, in morning.
Dose
Third to thirtieth potency.

Mygale Lasiodora Cubana. A large black Cuban Spider. N. O. Arachnida. Tincture of living spider.
Clinical
Chordee. Chorea. Gonorrhœa.
Characteristics
The pathogenetic data of Mygale consist of a proving by a young lady and the effect of a bite on a man. In the latter case, inflammation ensued which spread along the lymphatics, violet and afterwards green discoloration; chill followed by fever, dry mouth, and great thirst, trembling, dyspnœa, despondency, and fear of death. The prover developed sadness; dry mouth; nausea with great palpitation, dim sight, and great general weakness; increased flow of urine, hot, scalding, with stinging in urethra. This last symptom has led to the successful use of Myg. in gonorrhœa, chordee, and syphilis. The "trembling" observed in the man suggests its use in nervous cases, but the sphere of Myg. in chorea has been developed from the clinical side. In the cases cured with it, twitching and contractions of facial muscles have been very prominent; convulsive movements of …

Phatak's chapter on Mygale lasiodora is available in the app.
Read Phatak in the appClassical texts are in the public domain. Educational reference only — not medical advice.